How to call one method from another within the same class in Python

This tutorial is How to call one method from another within the same class in Python. Instance methods are built functions into the class definition of an object and require an instance of that class to be called. To call the method, you need to qualify function with self. . For example, in a class that contains functions first() and second(), first() can call second().

Example

class MainClass:
    def first(self):
        print ("First function call")
   def second(self):
       self.first()
       print ("First and Second function call")

class_instance = MainClass()
class_instance.second()

Output:
First function call
First and Second function call