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PO"Boilerplate" code in Python?
 

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  1. PO"Boilerplate" code in Python?
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    <p>Google has a Python tutorial, and they describe boilerplate code as "unfortunate" and provide this example:</p> <pre><code>#!/usr/bin/python # import modules used here -- sys is a very standard one import sys # Gather our code in a main() function def main(): print 'Hello there', sys.argv[1] # Command line args are in sys.argv[1], sys.argv[2] .. # sys.argv[0] is the script name itself and can be ignored # Standard boilerplate to call the main() function to begin # the program. if __name__ == '__main__': main() </code></pre> <p>Now, I've heard boilerplate code being described as "seemingly repetitive code that shows up again and again in order to get some result that seems like it ought to be much simpler" (<a href="https://stackoverflow.com/questions/3992199/what-is-boilerplate-code">example</a>).</p> <p>Anyways, in Python, the part considered "boilerplate" code of the example above was:</p> <pre><code>if __name__ == '__main__': main() </code></pre> <p>Now, my questions are as follows:</p> <p>1) Does boilerplate code in Python (like the example provided) take on the same definition as the definition I provided? If so, why?</p> <p>2) Is this code even necessary? It seems to me like the code runs whether or not there's a main method. What makes using this code better? Is it even better?</p> <p>3) Why do we use that code and what service does it provide?</p> <p>4) Does this occur throughout Python? Are there other examples of "boilerplate code"?</p> <p>Oh, and just an off topic question: do you need to <code>import sys</code> to use command line arguments in Python? How does it handle such arguments if its not there?</p>
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    1. CO`sys` exists whether or not you import it. You just can't use it in your code if you don't.
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      1. USIgnacio Vazquez-Abrams
 

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