How would I make my Python game Moddable?

Question

before you mark it as duplicate, I want to say I have read this: I want to make a moddable game. How does this affect my programming language choice?

And it did not help me. Just for proof of concept, what would I add to

# main.py
import turtle as t
screen = t.Screen()
turt = t.Turtle()
for i in range(8):
    t.forward(100)
    t.right(45)
    t.backward(75)
screen.exitonclick()

to make it so that in another file, you could add something like

import main
main.t.color("red")

to make the turtle a different color.

Basically, what would I add to main.py to make it run the mod settings?

Answer 1

Haha. Solved my own problem in less than 10 minutes.

So what I really wanted to do was to make a simple game modifiable.

So I created this (not necessarily smart or safe) method of making a configuration file that could be used for "modding".

This is what it looks like:

# main.py
import turtle as t
screen = t.Screen()
turt = t.Turtle()
cfg = open("mods.py","r")
cfg = cfg.read()
cfg = cfg.split("\n")
for i in range(len(cfg)):
    if i < len(cfg):
            exec(cfg[i])

for i in range(8):
    turt.forward(100)
    turt.right(45)
    turt.backward(75)
screen.exitonclick()

and in mods.py:

turt = t.Turtle()
turt.color("red")

Now before everyone gets all up in my face for using exec, let me just say that for a solution that was thought of quickly, I am okay with it. Plus, it wouldn't be that hard to add some sort of portection, ie if "os" not in cfg[i]: exec(cfg[i]) and all of that would really just be a matter of time consumption.

I had to add if i <len(cfg): because when I split at the \n that was adding a blank element at the end of the list it generated. I doubt that would raise an error, but no harm in being a little extra cautious.

Overall, I'm glad with my solution... I'll add security detection and stuff but as of right now it will work, because the game I am working on will not be a public game.