How can upper() works in wrapper?

Question

I can’t get why below codes doesn’t work.
Help me, somebody.
—-
text = input()

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

return wrapper

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

print(display_text(text))

Answer 1

I see people doing the same mistake. Now i wonder why are you all jumping to decorator functions using (@) if you can't understand how it's actually implemented.

You should pass argument name(any random name ) to wrapper function instead of the function name(func is the display_text function name).

Your uppercase_decorator function should look like this,

def uppercase_decorator(func) :
def wrapper(t):
func(t).upper()
return wrapper

Answer 2

Taka use return keyword at line no 5. to return func.upper() returned string.

https://code.sololearn.com/cEYet7syAU9e/?ref=app

Answer 3

Finally, I've got it!
Thanks guys!