Python has no way to enforce a variable to be a constant.

The nearest you can go is to use an enum:

class Constants(Enum):
    WIDTH = 1024
    HEIGHT = 256

And get to each value using for example Constants.WIDTH.value.

No one can reassign that value.

Otherwise if you want to rely on naming conventions, you can adhere to this one: declare variables that should never change uppercase:

WIDTH = 1024

No one will prevent to overwrite this value, and Python will not stop it.

That’s what does most Python code you will see.

Lessons in this unit:

0:	Introduction
1:	Python Strings
2:	Python Numbers
3:	Python Booleans
4:	How to check if a variable is a string in Python
5:	How to check if a variable is a number in Python
6:	Python, how to check if a number is odd or even
7:	Python, Accepting Input
8:	▶︎ Python Constants