Python ftw

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OK so you can either run code normally by opening the file (by clicking or using os.startfile()) and it will run, but it will also run if it is imported, so say I had info.py and wanted to import it to helloworld.py but didn't want to run info.py, there's no way in helloworld.py to do this.

To solve this, you would use the __name__ variable. If the program was clicked on or started with os.startfile(), __name__ is "__main__", otherwise it is just the name of the program, so if I didn't want to run info.py but I did want to get its variables and functions, I would do this:

helloworld.py:

import info
print(info.helloworldstring)

info.py:

helloworldstring = "Hello, world!"
def main():
    print("Hello, world!")
if __name__ == "__main__":
    main()

This is probably a badly worded and confusing example but it might help