Python if main

Python main

def main():
    print("Hello World!")

if __name__ == "__main__":
    main()

Python if main

#Add this code to run a support module on its own.
#Great for running quick tests.

if __name__ == "__main__":
	function_that_starts_the_module_to_run_on_its_own() 
    #or
    test_function_included_in_module()

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

If name == 'main'

if __name__ == "__main__":

If name == 'main' in python

# if __name__ == '__main__' checks if a file is imported as a module or not.
# example: 
def main():
    print('Hello World')
    
if __name__ == '__main__':
    # This code won't run if this file is imported.
    main()

Explained if name main python

# Suppose this is foo.py.

print("before import")
import math

print("before functionA")
def functionA():
    print("Function A")

print("before functionB")
def functionB():
    print("Function B {}".format(math.sqrt(100)))

print("before __name__ guard")
if __name__ == '__main__':
    functionA()
    functionB()
print("after __name__ guard")

-1

Source: stackoverflow.com

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Python if __main__

Python main

Python if __main__

__name__== __main__ in python

If __name__ == '__main__'

If __name__ == '__main__' in python

Explained if name main python

Python if main

Python if main

name== main in python

If name == 'main'

If name == 'main' in python