Decorators in python

#1

please elaborate the login_required part.did’nt get it .
and please tell all the working using decorator what we have done and how it is working.

#2

and how arguments are working in login_required.

#3

Login_required takes in another function as parameter which we want to access only when the user gets authenticated .Hence we wrap it in such a way that it will require authentication . Wrapper function takes in 2 positional arguments- username and password . The function which we passed in login_required will only be executed if login is successful.

Def add(a,b): 
    Print(a+b)
add=login_required(add)

It is similar as writing -

@login_required
Def add(a,b):
   Print(a+b)
#4

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