Help in Python decorator

Question

What do "functools.wrap" in Line 2 ?
can explaine it 🙏

def decorator(func):
@functools.wraps(func)
def wrapper_decorator(*args, **kwargs):
# Do something before
value = func(*args, **kwargs)
# Do something after
return value
return wrapper_decorator

Answer 1

It keeps the specific attributes of func that will normally be shadowed by the wrapper.
Eg the name of func

Answer 2

That's partially possible, but how about help string, signature,...
you can do it for each one .... or functools.wrap

Answer 3

yes.. 😅 I didn't think about it.
Thank you for the response.

Answer 4

So what's the advantage of this?
just keep the name?
Why don't we do this =>
"wrapper_decorator.__name__ = func.__name__ " instead import functools?