if __name__ == "__main__"



  • On 06/04/2016 at 17:54, xxxxxxxx wrote:

    I seem to be having a hard time understanding why this line is here.

    import c4d
    def main() :
    	doc = c4d.document.GetActiveDocument()
    	print doc
      
    if __name__ == "__main__":
    	main()
    

    I understand that this quick sample will execute the main() function. What's the difference then if the code does this?

    import c4d
      
    if __name__ == "__main__":
    	doc = c4d.documents.GetActiveDocument()
    	print doc
    

    Obviously it's not going to run a main() function because now it doesn't exist.
    You get the same result though.

    Is one way preferred over another?
    What would be the reason to use one over the other?

    I feel like I'm mostly confident in programming but this seems like a glaring oversight in fundamentals on my part as to why I don't understand this.



  • On 07/04/2016 at 02:06, xxxxxxxx wrote:

    Hello,

    the line " if __name__ == "__main__"" is a typical Python idiom. It is used to distinct between loading the code (in a module) and executing the code.

    Using a main() function makes no different but like any other pattern it is useful to organize the code.

    See also

    best wishes,
    Sebastian



  • On 15/04/2016 at 09:12, xxxxxxxx wrote:

    Hello Herbie,

    was your question answered?

    Best wishes,
    Sebastian


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