CODEWITHSUNDEEP
python
rxmnnxfpvg
rxmnnxfpvg

Reputation: 31013

Run python file -- what function is main?

I have simple python script, 'first.py':

#first.py
def firstFunctionEver() :
    print "hello"

firstFunctionEver()

I want to call this script using : python first.py and have it call the firstFunctionEver(). But, the script is ugly -- what function can I put the call to firstFunctionEver() in and have it run when the script is loaded?

Upvotes: 17

Views: 32775

Answers (3)

renatodamas
renatodamas

Reputation: 19565

I know that you explicitly said you want to call your script using python first.py. However you could consider calling your script in different way without even changing any code.

Let's say your project structure is of the form first_pckg/first.py. You can rename your first.py to __main__.py. Also include a __init__.py empty file to mark the directory as a python package. You can then simply call your package like this:

$ python -m first_pckg
hello

Upvotes: 0

Steve Tjoa
Steve Tjoa

Reputation: 61094

if __name__ == "__main__":
    firstFunctionEver()

Read more at the docs here.

Upvotes: 40

Ken
Ken

Reputation: 324

if __name__ == '__main__':
    firstFunctionEver()

Upvotes: 10

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