decorator py

# defining a decorator
def hello_decorator(func):
    # inner1 is a Wrapper function in
    # which the argument is called

    # inner function can access the outer local
    # functions like in this case "func"
    def inner1():
        print("Hello, this is before function execution")

        # calling the actual function now
        # inside the wrapper function.
        func()

        print("This is after function execution")

    return inner1


# defining a function, to be called inside wrapper
def function_to_be_used():
    print("This is inside the function !!")


def uppercase(func):
    def upper_wrapper():
        original_result = func()
        modified_result = original_result.upper()
        print(modified_result)

    return upper_wrapper


def title(func):
    def title_wrapper():
        original_result = func()
        modified_result = original_result.title()
        print(modified_result)
    return title_wrapper


def swappingcase(func):
    def swappingcase_wrapper():
        original_result = func()
        modified_result = original_result.swapcase()
        print(modified_result)
    return swappingcase_wrapper


def lowercase(func):
    def lower_wrapper():
        original_result = func()
        modified_result = original_result.lower()
        print(modified_result)
    return lower_wrapper


def replace(func):
    def replace_wrapper():
        original_result = func()
        modified_result = original_result.replace(original_result, 'Goodbye')
        print(modified_result)
    return replace_wrapper


@uppercase
def greet_upper():
    print("Hello change to uppercase")
    return 'Hello'


@lowercase
def greet_lower():
    print('Hello change to lowercase')
    return 'Hello'


@replace
def greet_replace():
    print('Hello replace with Goodbye')
    return 'Hello'


@title
def greet_title():
    print('hello and goodbye replaced with title caps')
    return 'hello and goodbye replaced with title caps'


@swappingcase
def greet_swappingcase():
    print('hElLo aNd gOoDbYe RePlACeD wItH sWaPcAsE')
    return 'hElLo aNd gOoDbYe RePlACeD wItH sWaPcAsE'


function_to_be_used = hello_decorator(function_to_be_used)
function_to_be_used()
print("\n")

decorated_greet_upper = uppercase(greet_upper)
greet_upper()
print("\n")

decorated_greet_lower = lowercase(greet_lower)
greet_lower()
print("\n")

decorated_greet_replace = replace(greet_replace)
greet_replace()
print("\n")

decorated_greet_title = title(greet_title)
greet_title()
print("\n")

decorated_greet_swappingcase = swappingcase(greet_swappingcase)
greet_swappingcase()