simple-decorator.py

# @property
# [Decorator]
# Add functionality to existing code

###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def my_decorator(func):
    def inner(value):
        print("Decorator Called...")
        return func(value)

    return inner


@my_decorator
def my_function(value):
    print("Show:", value)


my_function(12)


###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def show_values_decorator(func):
    def inner(*args):
        print("\nThis is from show decorator:", args, args[0])
        return func(*args)

    return inner


def pow_values_decorator(func):
    def inner(*args):
        args = list(args)
        for i in range(len(args)):
            args[i] **= 2
        print("This is from pow decorator:", args, args[0])
        return func(*args)

    return inner


@show_values_decorator
@pow_values_decorator
def calc(*args):
    print("This is From Function:", args, args[0])


calc(1)
calc(1, 2)
calc(1, 2, 3, 4, 5)


###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def check_type_decorator(func):
    def inner(*args):
        for a in args:
            print(a, type(a))
        return func(*args)

    return inner


@check_type_decorator
def my_mean_function(a: int, b: int, c: int):
    return (a + b + c) / 3


print(my_mean_function(4, 5, 6))


###~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
def clean_input_decorator(func):
    def inner(*args):
        L = list(args)
        for index, arg in enumerate(L):
            L[index] = arg.replace(" ", "")
        return func(*L)

    return inner


@clean_input_decorator
def f1(a, b, c):
    print(a)
    print(b)
    print(c)


f1("  hello  ", "hello world", "good bye")