python基础-def的嵌套

def multiplier(factor):
    def multiplyByFactor(number):
        factor_new = factor*4
        return number*factor_new
    return multiplyByFactor
a = multiplier(3)
print(a(4))
print(a(6))
a = multiplier(2)
print(a(4))
print(a(6))
a = multiplier(6)(7)
print(a)