What's the best way to initialise and use constants across Python classes?

Question

Here\'s how I am declaring constants and using them across different Python classes:

# project/constants.py
GOOD = 1
BAD = 2
AWFUL = 3

# project/question.py         


        

Answer 1

You have a few options:

1. Do it the way you're doing right now with a file of constants
2. Use a flat file and parse it once, pass a dictionary / class around
3. Query off to a database

From an overhead point of view, 1 and 2 are about the same. As for your question about importing specific constants, it's much easier to use one of the following conventions:

• import constants; some_func(constants.AWFUL)
• from constants import *; some_func(AWFUL)