Decorators Practice "Uppercasing"

Question

I've been understanding most of the lessons in the Python Core course, but Decorators have broken my mind. Specifically, the "Uppercasing" Practice.

I do not understand how to take the text that is being passed in as the argument and capitalze it inside the "Wrapper" function. Everything I try results in an error or a "None" result.

Examples:

text = input()

def uppercase_decorator(func):
def wrapper(text):
#your code goes here
text = text.upper()
return wrapper

@uppercase_decorator
def display_text(text):
return(text)

print(display_text(text))

--------------------------------

text = input()

def uppercase_decorator(func):
def wrapper(text):
#your code goes here
func(text.upper())
return wrapper

@uppercase_decorator
def display_text(text):
return(text)

print(display_text(text))

--------------------------------

text = input()

def uppercase_decorator(func):
def wrapper(text):
#your code goes here
func(text)
text = text.upper()
return wrapper

@uppercase_decorator
def display_text(text):
return(text)

print(display_text(text))

Answer 1

I was missing a "return" in the second example. It should have read:

def uppercase_decorator(func):
def wrapper(text):
#your code goes here
return func(text.upper())
return wrapper

My problem was is that I was thinking in terms of functions like print() that aren't chaning the argument. But since the argument is changing, I need to a return to bring back the value that was changed.

Answer 2

def uppercase_decorator(func)
def wrapper(*args,**kwargs):
res = func(*args,**kwargs)
return res.upper()
return wrapper

taking generic *args, **kwargs allow decorator to work with any function wich return a string...

res store the result of decorated function call

return res upper() to return the result string uppercased

if you want to make the decorator able to work with quite any return value type, use:

return str(res).upper()

Answer 3

My code, it works.
text = input()

def uppercase_decorator(func):
def wrapper(text):
#your code goes here
print(text.upper())
return wrapper

@uppercase_decorator
def display_text(text):
return(text)

display_text(text)

Answer 4

This woked fpr me:

#your code goes here
return func(text.upper())
return wrapper

Answer 5

you should provide your failing code(s) try, in order we can explain what you are making wrong ^^

Answer 6

@visph I've updated the question with three examples of what I have tried.