When do you use ''self'' in Python?
Are you supposed to use self when referencing a member function in Python (within the same module)? More generally, I was wondering when it is required to use self, not
Difference between ''cls'' and ''self'' in Python classes?
Why is cls sometimes used instead of self as an argument in Python classes? For example: class Person: def __init__(self, firstname, lastname): self rstname = firstname self.
Python class methods: when is self not needed
17 What is self? In Python, every normal method is forced to accept a parameter commonly named self. This is an instance of class - an object. This is how Python methods
How to type annotate a method that returns self?
This is also relevant for special methods, for example __enter__ traditionally returns self, so it would be nice to have a way to specify this without needing to even mention it in
What is the purpose of the ''self'' parameter? Why is it needed?
For a language-agnostic consideration of the design decision, see What is the advantage of having this/self pointer mandatory explicit?. To close debugging questions where OP omitted a
Why do I get "TypeError: Missing 1 required positional argument:
See Why do I get ''takes exactly 1 argument (2 given)'' when trying to call a method? for the opposite problem.
When to use self, &self, &mut self in methods?
Self is an alias for the type that the impl block is for. The rules of ownership and borrowing apply to self as they apply to any other parameter (see e.g. this answer). Examples
Difference between this and self in JavaScript
Everyone is aware of this in javascript, but there are also instances of self encountered in the wild, such as here So, what is the difference between this and self in