Python, ClassMethods

Question

class Person:
age=25
@classmethod
def printAge(cls):
print('The age is:',cls.age) #remember cls parameter relates to class
P=Person.printAge()
print(P).
Why the output shows None?. Thanks in Advance.

Answer 1

By default, a function that has no return statment returns None. Here, in printAge, it is the case, that's why P is None.

Answer 2

If I understood correctly, it should be like this:
P = Person
P.printAge()
printAge() - class method "P".

Answer 3

you can do print(p) if u implement a __str__() or __repr() method.

Answer 4

class Person:
age = 25
@classmethod
def printAge(cls):
return(cls.age)
P = Person.printAge()
print('The age is:',P)

Answer 5

Cbr✔[ Exams ]
In your example, one line is enough:
P = Person.printAge ()
- It simultaneously assigns and calls the classmetod.
And separately "P" cannot call the classmetod.