How to call a function within a class from another script?

Question

Class Script:

class Test2:

def __init__(self):
    self.a=10
        
    self.sq()
    
def sq(self):
    print(self.a*2)
    
def call_later(self):
    print("Called Later")

Calling Function from another script:

from test2 import *
import time

Test2()

time.sleep(30)

#I want to call this function without creating the object again
Test2.call_later()

How do I call a class function later on after the object has been created?

Answer 1

You are trying to call an instance method on a class. So either you instantiate the class (like shown in the above answer) or you make the method static and the member variable a class variable:

class Test2:
    a = 10

    @staticmethod
    def sq():
        print(Test2.a * 2)

and then you call the static method:

Test2.sq()

Answer 2

You need to create an object of the class so

from test2 import Test2

Test2().sq() 

Answer 3

You need to put both file in the same directory then create an instance of your class Test2 like this:

from test2 import Test2()
test2 = Test2()
test2.sq()

I hope it helped you