Is Inheritance in Python canonically the same as in other languages? A comparative example with Java

Question

I have been puzzling today, as (simplified) python code seemed to raise an exception.

Here's the code in python:

class AwinBaseOperator:
    def __init__(self):
        self.data = self.get_data(query_url='test')

    def get_data(self, query_url):
        print('Parent called with ', repr(query_url))

class AwinTransactionOperator(AwinBaseOperator):
    def __init__(self):
        super().__init__()

    def get_data(self):
        print('Child called')
        
print(AwinTransactionOperator())

This returns: Child called with 'test.'

It means the code is trying to use the child class's get_data within the AwinBaseOperator constructor, which should be wrong. So I tried to confirm this behavior isn't normal by translating my code to Java and running it.

Here is the relevant Java code:

I create a project, which is structured as such.

--- Project
 |---src
   |---Main.java  // Contains the main function call
   |---Awin
     |---AwinBaseOperator.java
     |---AwinTransactionOperator.java

Here are the respective class definitions

import Awin.AwinTransactionOperator;


public class Main {
  public static void main(String[] args) {
    AwinTransactionOperator a = new AwinTransactionOperator();
  }
}

package Awin;


public class AwinBaseOperator{
        
     public AwinBaseOperator(){
         this.getData("test");
     }
     
     public void getData(String query_url){
         System.out.println("Parent called getData with "+query_url);
     }
}

package Awin;
import Awin.AwinBaseOperator;


public class AwinTransactionOperator extends AwinBaseOperator{
    
    public AwinTransactionOperator(){
        super();
    }
    
    public void getData(){
        System.out.println("Child called getData");
    }
}

Which returns Parent called getData with test.

1. Could you please explain this fundamental difference in processing the main Object Oriented concept 'inheritance'?
2. What am I missing?

Answer 1

The shown example in Java does not display the use of Overriding , but that of Overloading the getData method.

Once we change the signature of AwinTransactionOperator.getData to

public void getData(String query_url){
        System.out.println("Child called getData with "+query_url);
}

The output is Child called getData with test .

Python does not support overloading .