python module if __name__ == '__main__' code example
Example 1: __name__== __main__ in python
# If the python interpreter is running that module (the source file)
# as the main program, it sets the special __name__ variable to have
# a value “__main__”. If this file is being imported from another
# module, __name__ will be set to the module’s name.
if __name__=='__main__':
# do something
Example 2: if __name__ == '__main__': main()
print("before import")
def functionA():
print("Function A")
def functionB():
print(("Function B"))
print("before __name__")
if __name__ == '__main__':
functionA()
functionB()
print("after __name__")
#===Output===
#before import
#before __name__ guard
#Function A
#Function B
#after __name__ guard
Example 3: python if name == main example
# It's as if the interpreter inserts this at the top
# of your module when run as the main program.
__name__ = "__main__"
Example 4: if__name__== '__main__':
if__name__== '__main__':