A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing


  • 3 years ago

Hi fellow OCW student, I have very fundamental questions about programming in general. I'd like to use a simple example as follows: class Square(Shape): def __init__(self, h): "h: length of side of the square" self.side = float(h) ===>> here, why should I use self.side instead of using just side = float(h)? I kind of understand why, but not 100%.

  • This Question is Closed
  1. anonymous
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The `self.` part indicates that the variable is a member of the class and not a local variable. Suppose you try to write your code like this: class Square(Shape): def __init__(self, h): side = float(h) What is side? Is side a local variable, usable only inside the `__init__` function? Or is it a member of the class? To avoid this confusion, you'll need to specifically say that the variable is a class member by putting `self.` in front of the variable. It also depends on the language (for example, in C++ you may, but are not required to, use `this->` to access member variables).

  2. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...


  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.