Non type object is not callable

Question

#your code goes here
def decor(func):
def wrap():
print("***")
func()
print("***")
print("END OF PAGE")
return wrap
@decor
def invoice():
print("INVOICE #" + input())

invoice()

Why is invoice() a non type object?

Answer 1

Decorator function should return a function.

In decor() function your function doesn't return anything as return statement is under wrap() function which was never called.

Remove 1 tab from return wrap .

Answer 2

Thank you MD Sayed!