what does if __name__ == '__main__': main() code example
Example 1: 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")
Example 2: __name__ == '__main__'
if __name__ == "__main__": main()