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()
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()
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
What does if __name_=="_main__": do?
# 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")
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