if __name__ == '__main__' for Python beginners 📥
if _name_ == __main__: (this script can be imported OR run standalone)
Functions and classes in this module can be reused without the main block of code executing
Good practice (code is modular, helps readability, leaves no global variables, avoids unintended execution)
Ex. library = Import library for functionality. When running library directly, display a help page.
--------- script1.py ---------
This file can run standalone or be imported
def favorite_food(food):
print(f"Your favorite food is {food}")
def main():
print("This is script1")
favorite_food("pizza")
print("Goodbye!")
if _name_ == '__main__':
main()
--------- script2.py ---------
This file should run only standalone
from script1 import *
def favorite_drink(drink):
print(f"Your favorite drink is {drink}")
print("This is script2")
favorite_food("sushi")
favorite_drink("coffee")
print('Goodbye!')
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