decorators.py

# # Decorators
#
# # func1(func) -> inner() -> logic -> return func1
#
# def decor(func):
#
#     def inner():
#         print("Decorated function")
#         func() # ordinary has been executed
#
#     return inner
#
# @decor
# def ordinary():
#     print("ordinary function")
#
#
# # ordinary()
#
#
# # decorator_function_variable = decor(ordinary)
# # # print(decorator_function_variable)
# #
# # decorator_function_variable()
# ordinary()
#
# print(ordinary)
# print(decor(ordinary))
# print(decor)


def smart_calc(func):
    def inner_func(x, y):
        print(f"I am calc {x} and {y}")
        if y == 0:
            print('Oops! Division by ZERO is illegal...!!!')
            return  # None

        return func(x, y) # 20/10 = 2.0

    return inner_func

@smart_calc
def go_divide(a, b):
    return a / b

print(go_divide(20, 2))


@smart_calc
def go_multi(a,b):
    return a*b

print(go_multi(30,10))


# student_names -> url ->  View -> models(database(ORM))