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Python Object-Oriented Python (retired) Objects __init__

peter keves
peter keves
6,854 Points
Posted by peter keves
peter keves
6,854 Points

Python and Swift vs Java when it comes to instantiation

my first programming language was swift and then i learned myself java and since now I'm learning python I wanted to ask if init() in swift and in python is the same as constructor in java

1 Answer

David McCarty
David McCarty
5,214 Points

They are similar, in the sense that, they are the first thing that is run when an object is created.

In Java, you write on constructor with the same name as the class

public class newClass()
{
  public newClass() //This is the no-args constructor
    {
        //stuff goes here
    }
}

If you don't explicitly write out a constructor, the Java compiler creates on for you and runs it whenever the object is created.

in python, we have classes, like Java, but there's an init() function that is called, it works like the constructor in Java:

class new_class():
    def __init__(self):
        # do stuff

If init isn't explicitly written out to do something, Pyhton creates on for you and runs it whenever the object is created.

So, in a sense, yes! As far as I understand it, Java and Python (not sure about swift as I've never learned it) have a similar constructor/init type function.