Programacion funcional con python

funcional.py

def zero(f=None):
    return 0 if not f else f(0)


def one(f=None):
    return 1 if not f else f(1)


def two(f=None):
    return 2 if not f else f(2)


def three(f=None):
    return 3 if not f else f(3)


def four(f=None):
    return 4 if not f else f(4)


def five(f=None):
    return 5 if not f else f(5)


def six(f=None):
    return 6 if not f else f(6)


def seven(f=None):
    return 7 if not f else f(7)


def eight(f=None):
    return 8 if not f else f(8)


def nine(f=None):
    return 9 if not f else f(9)


def plus(y):
    return lambda x: x + y


def minus(y):
    return lambda x: x - y


def times(y):
    return lambda x: x * y


def divided_by(y):
    return lambda x: x // y if y != 0 else 0