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        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
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        \                                       <td><p><a href=\"/success-stories/industrial-light-magic-runs-python/\">Industrial
        Light &amp; Magic Runs on Python</a> <em>by Tim Fortenberry</em></p></td>\n
        \                                   </tr>\n                                </tbody>\n
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        -->\n\n                    </div>\n\n                    <div class=\"medium-widget
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        \           \n\n<ul class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n
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        \   \n        <li class=\"tier-2 element-5\" role=\"treeitem\"><a href=\"/download/other/\"
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        \   </li>\n    \n    \n    \n    <li id=\"documentation\" class=\"tier-1 element-3
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        class=\"tier-1 element-5  \" aria-haspopup=\"true\">\n        <a href=\"/about/success/\"
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        class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n    \n        <li
        class=\"tier-2 element-1\" role=\"treeitem\"><a href=\"/about/success/#arts\"
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        title=\"\">Software Development</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    <li id=\"news\" class=\"tier-1 element-6  \" aria-haspopup=\"true\">\n
        \       <a href=\"/blogs/\" title=\"News from around the Python world\" class=\"\">News</a>\n
        \       \n            \n\n<ul class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n
        \   \n        <li class=\"tier-2 element-1\" role=\"treeitem\"><a href=\"/blogs/\"
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        class=\"tier-2 element-2\" role=\"treeitem\"><a href=\"http://planetpython.org/\"
        title=\"Planet Python\">Community News</a></li>\n    \n        <li class=\"tier-2
        element-3\" role=\"treeitem\"><a href=\"http://pyfound.blogspot.com/\" title=\"PSF
        Blog\">PSF News</a></li>\n    \n        <li class=\"tier-2 element-4\" role=\"treeitem\"><a
        href=\"http://pycon.blogspot.com/\" title=\"PyCon Blog\">PyCon News</a></li>\n
        \   \n</ul>\n\n        \n    </li>\n    \n    \n    \n    <li id=\"events\"
        class=\"tier-1 element-7  \" aria-haspopup=\"true\">\n        <a href=\"/events/\"
        title=\"\" class=\"\">Events</a>\n        \n            \n\n<ul class=\"subnav
        menu\" role=\"menu\" aria-hidden=\"true\">\n    \n        <li class=\"tier-2
        element-1\" role=\"treeitem\"><a href=\"/events/python-events/\" title=\"\">Python
        Events</a></li>\n    \n        <li class=\"tier-2 element-2\" role=\"treeitem\"><a
        href=\"/events/python-user-group/\" title=\"\">User Group Events</a></li>\n
        \   \n        <li class=\"tier-2 element-3\" role=\"treeitem\"><a href=\"/events/python-events/past/\"
        title=\"\">Python Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-4\" role=\"treeitem\"><a href=\"/events/python-user-group/past/\"
        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-5\" role=\"treeitem\"><a href=\"https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event\"
        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    \n  \n</ul>\n\n                    \n                </nav>\n\n
        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
        \       </div>\n\n\n             </div><!-- end .container -->\n        </header>\n\n
        \       <div id=\"content\" class=\"content-wrapper\">\n            <!-- Main
        Content Column -->\n            <div class=\"container\">\n\n                <section
        class=\"main-content \" role=\"main\">\n\n                    \n                    \n\n
        \                   \n\n                <div class=\"row\">\n\n                    <div
        class=\"small-widget get-started-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-get-started\"></span>Get Started</h2>\r\n<p>Whether
        you're new to programming or an experienced developer, it's easy to learn
        and use Python.</p>\r\n<p><a href=\"/about/gettingstarted/\">Start with our
        Beginner&rsquo;s Guide</a></p>\n                    </div>\n\n                    <div
        class=\"small-widget download-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-download\"></span>Download</h2>\n<p>Python
        source code and installers are available for download for all versions! Not
        sure which version to use? <a href=\"https://wiki.python.org/moin/Python2orPython3\">Check
        here</a>.</p>\n<p>Latest: <a href=\"/downloads/release/python-351/\">Python
        3.5.1</a> - <a href=\"/downloads/release/python-2711/\">Python 2.7.11</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        documentation-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-documentation\"></span>Docs</h2>\r\n<p>Documentation
        for Python's standard library, along with tutorials and guides, are available
        online.</p>\r\n<p><a href=\"https://docs.python.org\">docs.python.org</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        jobs-widget last\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-jobs\"></span>Jobs</h2>\r\n<p>Looking for
        work or have a Python related position that you're trying to hire for? Our
        <strong>relaunched community-run job board</strong> is the place to go.</p>\r\n<p><a
        href=\"//jobs.python.org\">jobs.python.org</a></p>\n                    </div>\n\n
        \               </div>\n\n                <div class=\"list-widgets row\">\n\n
        \                   <div class=\"medium-widget blog-widget\">\n                        \n
        \                       <div class=\"shrubbery\">\n                        \n
        \                           <h2 class=\"widget-title\"><span aria-hidden=\"true\"
        class=\"icon-news\"></span>Latest News</h2>\n                            <p
        class=\"give-me-more\"><a href=\"http://blog.python.org\" title=\"More News\">More</a></p>\n
        \                           \n                            <ul class=\"menu\">\n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2015-12-07T05:51:00+00:00\"><span class=\"say-no-more\">2015-</span>12-07</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/F9ApGB7BGB4/python-351-and-python-344rc1-are-now.html\">Python
        3.5.1 and Python 3.4.4rc1 are now available for download. ...</a></li>\n                                \n
        \                               <li>\n<time datetime=\"2015-12-05T22:14:00.000005+00:00\"><span
        class=\"say-no-more\">2015-</span>12-05</time>\n <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/X8l2dWcjfLs/python-2711-released.html\">The
        latest bugfix release of the Python 2.7 series is ...</a></li>\n                                \n
        \                               <li>\n<time datetime=\"2015-11-22T02:43:00.000006+00:00\"><span
        class=\"say-no-more\">2015-</span>11-22</time>\n <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/_sGRwFhJK4s/python-2711-release-candidate-1.html\">The
        first release candidate of Python 2.7.11, the next release ...</a></li>\n
        \                               \n                                <li>\n<time
        datetime=\"2015-09-13T14:28:00.000006+00:00\"><span class=\"say-no-more\">2015-</span>09-13</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/a6zwstMbRrg/python-350-has-been-released.html\">Python
        3.5.0 is now&nbsp;available for download. Python 3.5.0 is the ...</a></li>\n
        \                               \n                                <li>\n<time
        datetime=\"2015-09-09T13:43:00.000002+00:00\"><span class=\"say-no-more\">2015-</span>09-09</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/D-XkdrMEtE0/python-350-release-candidate-4-released.html\">Python
        3.5.0rc4 is now&nbsp;available for download. This is a last-minute ...</a></li>\n
        \                               \n                            </ul>\n                        </div><!--
        end .shrubbery -->\n\n                    </div>\n\n                    <div
        class=\"medium-widget event-widget last\">\n                        \n                        <div
        class=\"shrubbery\">\n                        \n                            <h2
        class=\"widget-title\"><span aria-hidden=\"true\" class=\"icon-calendar\"></span>Upcoming
        Events</h2>\n                            <p class=\"give-me-more\"><a href=\"/events/calendars/\"
        title=\"More Events\">More</a></p>\n                            \n                            <ul
        class=\"menu\">\n                                \n                                \n
        \                               \n                                <li>\n<time
        datetime=\"2016-02-26T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>02-26</time>\n
        <a href=\"/events/python-user-group/388/\">Django Girls Ciudad de M\xE9xico</a></li>\n
        \                               \n                                \n                                \n
        \                               <li>\n<time datetime=\"2016-03-05T00:00:00+00:00\"><span
        class=\"say-no-more\">2016-</span>03-05</time>\n <a href=\"/events/python-events/389/\">PyDelhi
        Conference</a></li>\n                                \n                                \n
        \                               \n                                <li>\n<time
        datetime=\"2016-03-11T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>03-11</time>\n
        <a href=\"/events/python-events/384/\">PyCon SK 2016</a></li>\n                                \n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2016-03-12T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>03-12</time>\n
        <a href=\"/events/python-events/400/\">PyData Amsterdam 2016</a></li>\n                                \n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2016-04-01T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>04-01</time>\n
        <a href=\"/events/python-events/390/\">PyDay Loja 2016</a></li>\n                                \n
        \                               \n                            </ul>\n                        </div>\n\n
        \                   </div>\n\n                </div>\n\n                <div
        class=\"row\">\n\n                    <div class=\"medium-widget success-stories-widget\">\n
        \                       \n\n                        <div class=\"shrubbery\">\n
        \                           \n\n                            <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-success-stories\"></span>Success Stories</h2>\n
        \                           <p class=\"give-me-more\"><a href=\"/success-stories/\"
        title=\"More Success Stories\">More</a></p>\n\n                            \n
        \                           <div class=\"success-story-item\" data-weight=\"0\"
        id=\"success-story-2\" style=\"display: none;\">\n\n                            <blockquote>\n
        \                               <a href=\"/success-stories/industrial-light-magic-runs-python/\">ILM
        runs a batch processing environment capable of modeling, rendering and compositing
        tens of thousands of motion picture frames per day. Thousands of machines
        running Linux, IRIX, Compaq Tru64, OS X, Solaris, and Windows join together
        to provide a production pipeline used by ~800 users daily. Speed of development
        is key, and Python was a faster way to code (and re-code) the programs that
        control this production pipeline.</a>\n                            </blockquote>\n\n
        \                           <table cellpadding=\"0\" cellspacing=\"0\" border=\"0\"
        width=\"100%\" class=\"quote-from\">\n                                <tbody>\n
        \                                   <tr>\n                                        \n
        \                                       <td><p><a href=\"/success-stories/industrial-light-magic-runs-python/\">Industrial
        Light &amp; Magic Runs on Python</a> <em>by Tim Fortenberry</em></p></td>\n
        \                                   </tr>\n                                </tbody>\n
        \                           </table>\n                            </div>\n
        \                           \n\n                        </div><!-- end .shrubbery
        -->\n\n                    </div>\n\n                    <div class=\"medium-widget
        applications-widget last\">\n                        <div class=\"shrubbery\">\n
        \                           <h2 class=\"widget-title\"><span aria-hidden=\"true\"
        class=\"icon-python\"></span>Use Python for&hellip;</h2>\r\n<p class=\"give-me-more\"><a
        href=\"/about/apps\" title=\"More Applications\">More</a></p>\r\n\r\n<ul class=\"menu\">\r\n
        \   <li><b>Web Programming</b>:\r\n        <span class=\"tag-wrapper\"><a
        class=\"tag\" href=\"http://www.djangoproject.com/\">Django</a>, <a class=\"tag\"
        href=\"http://www.pylonsproject.org/\">Pyramid</a>, <a class=\"tag\" href=\"http://bottlepy.org\">Bottle</a>,
        <a class=\"tag\" href=\"http://tornadoweb.org\">Tornado</a>, <a href=\"http://flask.pocoo.org/\"
        class=\"tag\">Flask</a>, <a class=\"tag\" href=\"http://www.web2py.com/\">web2py</a></span></li>\r\n
        \   <li><b>GUI Development</b>:\r\n        <span class=\"tag-wrapper\"><a
        class=\"tag\" href=\"http://www.wxpython.org/\">wxPython</a>, <a class=\"tag\"
        href=\"http://wiki.python.org/moin/TkInter\">tkInter</a>, <a class=\"tag\"
        href=\"http://www.pygtk.org\">PyGtk</a>, <a class=\"tag\" href=\"https://wiki.gnome.org/Projects/PyGObject\">PyGObject</a>,
        <a class=\"tag\" href=\"http://www.riverbankcomputing.co.uk/software/pyqt/intro\">PyQt</a></span></li>\r\n
        \   <li><b>Scientific and Numeric</b>:\r\n        <span class=\"tag-wrapper\">\r\n<a
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        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
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        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
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        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
        \       </div>\n\n\n             </div><!-- end .container -->\n        </header>\n\n
        \       <div id=\"content\" class=\"content-wrapper\">\n            <!-- Main
        Content Column -->\n            <div class=\"container\">\n\n                <section
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        class=\"small-widget get-started-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-get-started\"></span>Get Started</h2>\r\n<p>Whether
        you're new to programming or an experienced developer, it's easy to learn
        and use Python.</p>\r\n<p><a href=\"/about/gettingstarted/\">Start with our
        Beginner&rsquo;s Guide</a></p>\n                    </div>\n\n                    <div
        class=\"small-widget download-widget\">\n                        <h2 class=\"widget-title\"><span
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        3.5.1</a> - <a href=\"/downloads/release/python-2711/\">Python 2.7.11</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        documentation-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-documentation\"></span>Docs</h2>\r\n<p>Documentation
        for Python's standard library, along with tutorials and guides, are available
        online.</p>\r\n<p><a href=\"https://docs.python.org\">docs.python.org</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        jobs-widget last\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-jobs\"></span>Jobs</h2>\r\n<p>Looking for
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        element-4\" role=\"treeitem\"><a href=\"/events/python-user-group/past/\"
        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-5\" role=\"treeitem\"><a href=\"https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event\"
        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    \n  \n</ul>\n\n                    \n                </nav>\n\n
        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
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        \                                       <td><p><a href=\"/success-stories/industrial-light-magic-runs-python/\">Industrial
        Light &amp; Magic Runs on Python</a> <em>by Tim Fortenberry</em></p></td>\n
        \                                   </tr>\n                                </tbody>\n
        \                           </table>\n                            </div>\n
        \                           \n\n                        </div><!-- end .shrubbery
        -->\n\n                    </div>\n\n                    <div class=\"medium-widget
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        href=\"/about/gettingstarted/\" title=\"\">Getting Started</a></li>\n    \n
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        \   \n    <li id=\"downloads\" class=\"tier-1 element-2  \" aria-haspopup=\"true\">\n
        \       <a href=\"/downloads/\" title=\"\" class=\"\">Downloads</a>\n        \n
        \           \n\n<ul class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n
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        \   \n        <li class=\"tier-2 element-5\" role=\"treeitem\"><a href=\"/download/other/\"
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        class=\"tier-1 element-5  \" aria-haspopup=\"true\">\n        <a href=\"/about/success/\"
        title=\"success-stories\" class=\"\">Success Stories</a>\n        \n            \n\n<ul
        class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n    \n        <li
        class=\"tier-2 element-1\" role=\"treeitem\"><a href=\"/about/success/#arts\"
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        role=\"treeitem\"><a href=\"/about/success/#scientific\" title=\"\">Scientific</a></li>\n
        \   \n        <li class=\"tier-2 element-7\" role=\"treeitem\"><a href=\"/about/success/#software-development\"
        title=\"\">Software Development</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    <li id=\"news\" class=\"tier-1 element-6  \" aria-haspopup=\"true\">\n
        \       <a href=\"/blogs/\" title=\"News from around the Python world\" class=\"\">News</a>\n
        \       \n            \n\n<ul class=\"subnav menu\" role=\"menu\" aria-hidden=\"true\">\n
        \   \n        <li class=\"tier-2 element-1\" role=\"treeitem\"><a href=\"/blogs/\"
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        class=\"tier-2 element-2\" role=\"treeitem\"><a href=\"http://planetpython.org/\"
        title=\"Planet Python\">Community News</a></li>\n    \n        <li class=\"tier-2
        element-3\" role=\"treeitem\"><a href=\"http://pyfound.blogspot.com/\" title=\"PSF
        Blog\">PSF News</a></li>\n    \n        <li class=\"tier-2 element-4\" role=\"treeitem\"><a
        href=\"http://pycon.blogspot.com/\" title=\"PyCon Blog\">PyCon News</a></li>\n
        \   \n</ul>\n\n        \n    </li>\n    \n    \n    \n    <li id=\"events\"
        class=\"tier-1 element-7  \" aria-haspopup=\"true\">\n        <a href=\"/events/\"
        title=\"\" class=\"\">Events</a>\n        \n            \n\n<ul class=\"subnav
        menu\" role=\"menu\" aria-hidden=\"true\">\n    \n        <li class=\"tier-2
        element-1\" role=\"treeitem\"><a href=\"/events/python-events/\" title=\"\">Python
        Events</a></li>\n    \n        <li class=\"tier-2 element-2\" role=\"treeitem\"><a
        href=\"/events/python-user-group/\" title=\"\">User Group Events</a></li>\n
        \   \n        <li class=\"tier-2 element-3\" role=\"treeitem\"><a href=\"/events/python-events/past/\"
        title=\"\">Python Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-4\" role=\"treeitem\"><a href=\"/events/python-user-group/past/\"
        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-5\" role=\"treeitem\"><a href=\"https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event\"
        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    \n  \n</ul>\n\n                    \n                </nav>\n\n
        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
        \       </div>\n\n\n             </div><!-- end .container -->\n        </header>\n\n
        \       <div id=\"content\" class=\"content-wrapper\">\n            <!-- Main
        Content Column -->\n            <div class=\"container\">\n\n                <section
        class=\"main-content \" role=\"main\">\n\n                    \n                    \n\n
        \                   \n\n                <div class=\"row\">\n\n                    <div
        class=\"small-widget get-started-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-get-started\"></span>Get Started</h2>\r\n<p>Whether
        you're new to programming or an experienced developer, it's easy to learn
        and use Python.</p>\r\n<p><a href=\"/about/gettingstarted/\">Start with our
        Beginner&rsquo;s Guide</a></p>\n                    </div>\n\n                    <div
        class=\"small-widget download-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-download\"></span>Download</h2>\n<p>Python
        source code and installers are available for download for all versions! Not
        sure which version to use? <a href=\"https://wiki.python.org/moin/Python2orPython3\">Check
        here</a>.</p>\n<p>Latest: <a href=\"/downloads/release/python-351/\">Python
        3.5.1</a> - <a href=\"/downloads/release/python-2711/\">Python 2.7.11</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        documentation-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-documentation\"></span>Docs</h2>\r\n<p>Documentation
        for Python's standard library, along with tutorials and guides, are available
        online.</p>\r\n<p><a href=\"https://docs.python.org\">docs.python.org</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        jobs-widget last\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-jobs\"></span>Jobs</h2>\r\n<p>Looking for
        work or have a Python related position that you're trying to hire for? Our
        <strong>relaunched community-run job board</strong> is the place to go.</p>\r\n<p><a
        href=\"//jobs.python.org\">jobs.python.org</a></p>\n                    </div>\n\n
        \               </div>\n\n                <div class=\"list-widgets row\">\n\n
        \                   <div class=\"medium-widget blog-widget\">\n                        \n
        \                       <div class=\"shrubbery\">\n                        \n
        \                           <h2 class=\"widget-title\"><span aria-hidden=\"true\"
        class=\"icon-news\"></span>Latest News</h2>\n                            <p
        class=\"give-me-more\"><a href=\"http://blog.python.org\" title=\"More News\">More</a></p>\n
        \                           \n                            <ul class=\"menu\">\n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2015-12-07T05:51:00+00:00\"><span class=\"say-no-more\">2015-</span>12-07</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/F9ApGB7BGB4/python-351-and-python-344rc1-are-now.html\">Python
        3.5.1 and Python 3.4.4rc1 are now available for download. ...</a></li>\n                                \n
        \                               <li>\n<time datetime=\"2015-12-05T22:14:00.000005+00:00\"><span
        class=\"say-no-more\">2015-</span>12-05</time>\n <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/X8l2dWcjfLs/python-2711-released.html\">The
        latest bugfix release of the Python 2.7 series is ...</a></li>\n                                \n
        \                               <li>\n<time datetime=\"2015-11-22T02:43:00.000006+00:00\"><span
        class=\"say-no-more\">2015-</span>11-22</time>\n <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/_sGRwFhJK4s/python-2711-release-candidate-1.html\">The
        first release candidate of Python 2.7.11, the next release ...</a></li>\n
        \                               \n                                <li>\n<time
        datetime=\"2015-09-13T14:28:00.000006+00:00\"><span class=\"say-no-more\">2015-</span>09-13</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/a6zwstMbRrg/python-350-has-been-released.html\">Python
        3.5.0 is now&nbsp;available for download. Python 3.5.0 is the ...</a></li>\n
        \                               \n                                <li>\n<time
        datetime=\"2015-09-09T13:43:00.000002+00:00\"><span class=\"say-no-more\">2015-</span>09-09</time>\n
        <a href=\"http://feedproxy.google.com/~r/PythonInsider/~3/D-XkdrMEtE0/python-350-release-candidate-4-released.html\">Python
        3.5.0rc4 is now&nbsp;available for download. This is a last-minute ...</a></li>\n
        \                               \n                            </ul>\n                        </div><!--
        end .shrubbery -->\n\n                    </div>\n\n                    <div
        class=\"medium-widget event-widget last\">\n                        \n                        <div
        class=\"shrubbery\">\n                        \n                            <h2
        class=\"widget-title\"><span aria-hidden=\"true\" class=\"icon-calendar\"></span>Upcoming
        Events</h2>\n                            <p class=\"give-me-more\"><a href=\"/events/calendars/\"
        title=\"More Events\">More</a></p>\n                            \n                            <ul
        class=\"menu\">\n                                \n                                \n
        \                               \n                                <li>\n<time
        datetime=\"2016-02-26T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>02-26</time>\n
        <a href=\"/events/python-user-group/388/\">Django Girls Ciudad de M\xE9xico</a></li>\n
        \                               \n                                \n                                \n
        \                               <li>\n<time datetime=\"2016-03-05T00:00:00+00:00\"><span
        class=\"say-no-more\">2016-</span>03-05</time>\n <a href=\"/events/python-events/389/\">PyDelhi
        Conference</a></li>\n                                \n                                \n
        \                               \n                                <li>\n<time
        datetime=\"2016-03-11T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>03-11</time>\n
        <a href=\"/events/python-events/384/\">PyCon SK 2016</a></li>\n                                \n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2016-03-12T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>03-12</time>\n
        <a href=\"/events/python-events/400/\">PyData Amsterdam 2016</a></li>\n                                \n
        \                               \n                                \n                                <li>\n<time
        datetime=\"2016-04-01T00:00:00+00:00\"><span class=\"say-no-more\">2016-</span>04-01</time>\n
        <a href=\"/events/python-events/390/\">PyDay Loja 2016</a></li>\n                                \n
        \                               \n                            </ul>\n                        </div>\n\n
        \                   </div>\n\n                </div>\n\n                <div
        class=\"row\">\n\n                    <div class=\"medium-widget success-stories-widget\">\n
        \                       \n\n                        <div class=\"shrubbery\">\n
        \                           \n\n                            <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-success-stories\"></span>Success Stories</h2>\n
        \                           <p class=\"give-me-more\"><a href=\"/success-stories/\"
        title=\"More Success Stories\">More</a></p>\n\n                            \n
        \                           <div class=\"success-story-item\" data-weight=\"0\"
        id=\"success-story-2\" style=\"display: none;\">\n\n                            <blockquote>\n
        \                               <a href=\"/success-stories/industrial-light-magic-runs-python/\">ILM
        runs a batch processing environment capable of modeling, rendering and compositing
        tens of thousands of motion picture frames per day. Thousands of machines
        running Linux, IRIX, Compaq Tru64, OS X, Solaris, and Windows join together
        to provide a production pipeline used by ~800 users daily. Speed of development
        is key, and Python was a faster way to code (and re-code) the programs that
        control this production pipeline.</a>\n                            </blockquote>\n\n
        \                           <table cellpadding=\"0\" cellspacing=\"0\" border=\"0\"
        width=\"100%\" class=\"quote-from\">\n                                <tbody>\n
        \                                   <tr>\n                                        \n
        \                                       <td><p><a href=\"/success-stories/industrial-light-magic-runs-python/\">Industrial
        Light &amp; Magic Runs on Python</a> <em>by Tim Fortenberry</em></p></td>\n
        \                                   </tr>\n                                </tbody>\n
        \                           </table>\n                            </div>\n
        \                           \n\n                        </div><!-- end .shrubbery
        -->\n\n                    </div>\n\n                    <div class=\"medium-widget
        applications-widget last\">\n                        <div class=\"shrubbery\">\n
        \                           <h2 class=\"widget-title\"><span aria-hidden=\"true\"
        class=\"icon-python\"></span>Use Python for&hellip;</h2>\r\n<p class=\"give-me-more\"><a
        href=\"/about/apps\" title=\"More Applications\">More</a></p>\r\n\r\n<ul class=\"menu\">\r\n
        \   <li><b>Web Programming</b>:\r\n        <span class=\"tag-wrapper\"><a
        class=\"tag\" href=\"http://www.djangoproject.com/\">Django</a>, <a class=\"tag\"
        href=\"http://www.pylonsproject.org/\">Pyramid</a>, <a class=\"tag\" href=\"http://bottlepy.org\">Bottle</a>,
        <a class=\"tag\" href=\"http://tornadoweb.org\">Tornado</a>, <a href=\"http://flask.pocoo.org/\"
        class=\"tag\">Flask</a>, <a class=\"tag\" href=\"http://www.web2py.com/\">web2py</a></span></li>\r\n
        \   <li><b>GUI Development</b>:\r\n        <span class=\"tag-wrapper\"><a
        class=\"tag\" href=\"http://www.wxpython.org/\">wxPython</a>, <a class=\"tag\"
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        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
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        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    \n  \n</ul>\n\n                    \n                </nav>\n\n
        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
        \       </div>\n\n\n             </div><!-- end .container -->\n        </header>\n\n
        \       <div id=\"content\" class=\"content-wrapper\">\n            <!-- Main
        Content Column -->\n            <div class=\"container\">\n\n                <section
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        class=\"small-widget get-started-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-get-started\"></span>Get Started</h2>\r\n<p>Whether
        you're new to programming or an experienced developer, it's easy to learn
        and use Python.</p>\r\n<p><a href=\"/about/gettingstarted/\">Start with our
        Beginner&rsquo;s Guide</a></p>\n                    </div>\n\n                    <div
        class=\"small-widget download-widget\">\n                        <h2 class=\"widget-title\"><span
        aria-hidden=\"true\" class=\"icon-download\"></span>Download</h2>\n<p>Python
        source code and installers are available for download for all versions! Not
        sure which version to use? <a href=\"https://wiki.python.org/moin/Python2orPython3\">Check
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        3.5.1</a> - <a href=\"/downloads/release/python-2711/\">Python 2.7.11</a></p>\n
        \                   </div>\n\n                    <div class=\"small-widget
        documentation-widget\">\n                        <h2 class=\"widget-title\"><span
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        href=\"/events/python-user-group/\" title=\"\">User Group Events</a></li>\n
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        element-4\" role=\"treeitem\"><a href=\"/events/python-user-group/past/\"
        title=\"\">User Group Events Archive</a></li>\n    \n        <li class=\"tier-2
        element-5\" role=\"treeitem\"><a href=\"https://wiki.python.org/moin/PythonEventsCalendar#Submitting_an_Event\"
        title=\"\">Submit an Event</a></li>\n    \n</ul>\n\n        \n    </li>\n
        \   \n    \n    \n    \n  \n</ul>\n\n                    \n                </nav>\n\n
        \               <div class=\"header-banner \"> <!-- for optional \"do-not-print\"
        class -->\n                    \n        <div id=\"dive-into-python\" class=\"flex-slideshow
        slideshow\">\n\n            <ul class=\"launch-shell menu\" id=\"launch-shell\">\n
        \               <li>\n                    <a class=\"button prompt\" id=\"start-shell\"
        data-shell-container=\"#dive-into-python\" href=\"/shell/\">&gt;_\n                        <span
        class=\"message\">Launch Interactive Shell</span>\n                    </a>\n
        \               </li>\n            </ul>\n\n            <ul class=\"slides
        menu\">\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\"comment\"># Python 3: Fibonacci
        series up to n</span>\r\n>>> def fib(n):\r\n>>>     a, b = 0, 1\r\n>>>     while
        a &lt; n:\r\n>>>         print(a, end=' ')\r\n>>>         a, b = b, a+b\r\n>>>
        \    print()\r\n>>> fib(1000)\r\n<span class=\"output\">0 1 1 2 3 5 8 13 21
        34 55 89 144 233 377 610 987</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Functions Defined</h1>\r\n<p>The core of extensible
        programming is defining functions. Python allows mandatory and optional arguments,
        keyword arguments, and even arbitrary argument lists. <a href=\"//docs.python.org/3/tutorial/controlflow.html#defining-functions\">More
        about defining functions in Python&nbsp;3</a></p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: List comprehensions</span>\r\n>>> fruits = ['Banana',
        'Apple', 'Lime']\r\n>>> loud_fruits = [fruit.upper() for fruit in fruits]\r\n>>>
        print(loud_fruits)\r\n<span class=\"output\">['BANANA', 'APPLE', 'LIME']</span>\r\n\r\n<span
        class=\"comment\"># List and the enumerate function</span>\r\n>>> list(enumerate(fruits))\r\n<span
        class=\"output\">[(0, 'Banana'), (1, 'Apple'), (2, 'Lime')]</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Compound Data Types</h1>\r\n<p>Lists
        (known as arrays in other languages) are one of the compound data types that
        Python understands. Lists can be indexed, sliced and manipulated with other
        built-in functions. <a href=\"//docs.python.org/3/tutorial/introduction.html#lists\">More
        about lists in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \               <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple arithmetic</span>\r\n>>> 1 / 2\r\n<span
        class=\"output\">0.5</span>\r\n>>> 2 ** 3\r\n<span class=\"output\">8</span>\r\n>>>
        17 / 3  <span class=\"comment\"># classic division returns a float</span>\r\n<span
        class=\"output\">5.666666666666667</span>\r\n>>> 17 // 3  <span class=\"comment\">#
        floor division</span>\r\n<span class=\"output\">5</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>Intuitive Interpretation</h1>\r\n<p>Calculations
        are simple with Python, and expression syntax is straightforward: the operators
        <code>+</code>, <code>-</code>, <code>*</code> and <code>/</code> work as
        expected; parentheses <code>()</code> can be used for grouping. <a href=\"http://docs.python.org/3/tutorial/introduction.html#using-python-as-a-calculator\">More
        about simple math functions in Python&nbsp;3</a>.</p></div>\n                </li>\n
        \               \n                <li>\n                    <div class=\"slide-code\"><pre><code><span
        class=\"comment\"># Python 3: Simple output (with Unicode)</span>\r\n>>> print(\"Hello,
        I'm Python!\")\r\n<span class=\"output\">Hello, I'm Python!</span>\r\n\r\n<span
        class=\"comment\"># Input, assignment</span>\r\n>>> name = input('What is
        your name?\\n')\r\n>>> print('Hi, %s.' % name)\r\n<span class=\"output\">What
        is your name?\r\nPython\r\nHi, Python.</span></code></pre></div>\n                    <div
        class=\"slide-copy\"><h1>Quick &amp; Easy to Learn</h1>\r\n<p>Experienced
        programmers in any other language can pick up Python very quickly, and beginners
        find the clean syntax and indentation structure easy to learn. <a href=\"//docs.python.org/3/tutorial/\">Whet
        your appetite</a> with our Python&nbsp;3 overview.</p>\r\n                   </div>\n
        \               </li>\n                \n                <li>\n                    <div
        class=\"slide-code\"><pre><code><span class=\\\"comment\\\"># For loop on
        a list</span>\r\n>>> numbers = [2, 4, 6, 8]\r\n>>> product = 1\r\n>>> for
        number in numbers:\r\n...    product = product * number\r\n... \r\n>>> print('The
        product is:', product)\r\n<span class=\\\"output\\\">The product is: 384</span></code></pre></div>\n
        \                   <div class=\"slide-copy\"><h1>All the Flow You&rsquo;d
        Expect</h1>\r\n<p>Python knows the usual control flow statements that other
        languages speak &mdash; <code>if</code>, <code>for</code>, <code>while</code>
        and <code>range</code> &mdash; with some of its own twists, of course. <a
        href=\"//docs.python.org/3/tutorial/controlflow.html\">More control flow tools
        in Python&nbsp;3</a></p></div>\n                </li>\n                \n
        \           </ul>\n        </div>\n\n\n                </div>\n\n                \n
        \       <div class=\"introduction\">\n            <p>Python is a programming
        language that lets you work quickly <span class=\"breaker\"></span>and integrate
        systems more effectively. <a class=\"readmore\" href=\"/doc/\">Learn More</a></p>\n
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        running Linux, IRIX, Compaq Tru64, OS X, Solaris, and Windows join together
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        \                                   <tr>\n                                        \n
        \                                       <td><p><a href=\"/success-stories/industrial-light-magic-runs-python/\">Industrial
        Light &amp; Magic Runs on Python</a> <em>by Tim Fortenberry</em></p></td>\n
        \                                   </tr>\n                                </tbody>\n
        \                           </table>\n                            </div>\n
        \                           \n\n                        </div><!-- end .shrubbery
        -->\n\n                    </div>\n\n                    <div class=\"medium-widget
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