creator = "Mahi Rana"
PI = "3.14768"

def subtract(a,b):
    return a-b

def add(a,b):
    return a+b

def area(radius):
    return PI*radius*radius

print(__name__)

if __name__ == "__main__":
    print("This will only run when calculator is being executed as a script")
    print(subtract(3, 5))

_year = 2020

print("Done with claculator module")
print("This module is again updated at this point.")