conditional_function_definition_loop

# def executes at runtime
# in python theres is no such thing as a separate compile time.
# because of this def is a truly executable statement and can
# be embedded within conditional statements.
# ex:
trigger = True
while(trigger):
    makeFunc = eval(input("Enter 0 or 1 to define function: "))
    if makeFunc == 0 or makeFunc == 1:
        trigger = False
        break
    else:
        print("Invalid input")

if makeFunc == 0:
    def function(x=1,y=2,z=3):
        return None
else:
    def function(x="one",y="two",z="three"):
        return True

x = function.__defaults__
print(x)