Import module - undefined global variable

[DonBarker]

I thought I understood and fixed this problem:  A variable defined in a module remains undefined after I import the module.  Here is the simplified version.

The main script and the module are in the same folder/dir.

This is my module:  mysettings.py

def main():

    myvar = "This is imported."

if __name__ == '__main__':
    main()

This is my script:  irp.py:

import mysettings

def main():

    print myvar

if __name__ == '__main__':
    main()

Interpreter error:

NameError: global name 'myvar' is not defined

Can you tell me why?

Thanks,

[MathewCoyle]

You need to do something like this in your irp.py

mysettings.main()

When you import a module it isn't executed as the __main__ so it needs to be called by function if you have it setup that way.

[DonBarker]

Matthew,

Thanks for taking time to reply.

I'm a Python novice so don't understand how/where to use this in my script.  Can you explain?

[MathewCoyle]

Your mysettings.py should be something along these lines, depending on what it does.

def main():

    myvar = "This is imported."
    return myvar

if __name__ == '__main__':
    main()

Your irp.py should be something like this.

import mysettings

def main():

    print mysettings.main()

if __name__ == '__main__':
    main()

[DonBarker]

Got it now.  Thanks again for taking time to reply and explain.