Question

How to overload constructors or methods in Python?

Answer 1

Python's constructor: _init__ () is the first method of a class. Whenever we try to instantiate an object __init__() is automatically invoked by python to initialize members of an object. We can't overload constructors or methods in Python. It shows an error if we try to overload.

Example:

1. class student:    
2.     def __init__(self, name):    
3.         self.name = name    
4.     def __init__(self, name, email):    
5.         self.name = name    
6.         self.email = email    
7.          
8. # This line will generate an error    
9. #st = student("rahul")    
10.     
11. # This line will call the second constructor    
12. st = student("rahul", "rahul@gmail.com")    
13. print("Name: ", st.name)  
14. print("Email id: ", st.email)  

Output:

Name:  rahul
Email id:  rahul@gmail.com