How do I edit a .py config file in a subdirectory?-CodePudding

I'm trying to read and edit a config file in python. Here is the file structure:

main.py
folder
-> __init__.py
-> module.py
-> config.py

I have four files:

main.py

import folder.config as config
import folder.module as module

if __name__ == "__main__":
    config.x = 2
    module.foo()

init.py

import os, sys; sys.path.append(os.path.dirname(os.path.realpath(__file__)))

module.py

import config

def foo():
    print("Result from function: "   str(config.x))

config.py

x = 10

I expect the result from calling 'foo' to be '2', but instead it prints '10', the config file's default value. How can I ensure that changes made to 'config.py' in 'main.py' persist to other modules?

Any help would be greatly appreciated!

CodePudding user response：

Why don't you use JSON or csv or any other format to store values?

EDIT: I suggest following solution:

main.py

import folder.config as config
import folder.module as module

if __name__ == "__main__":
    config.set_x(2)
    module.foo()

init.py

import os, sys; sys.path.append(os.path.dirname(os.path.realpath(__file__)))

module.py

import config

def foo(): print(f"Result from function: { str(config.get_x()) }")

config.py

import json

def read_json():
    with open("data.json") as f: d = json.load(f)
    return d

def write_json(d):
    with open('data.json', 'w') as f: json.dump(d, f)

try:
    data = read_json()
except:
    data = {}
    write_json({})

def set_x(val):
    data["x"] = val
    write_json(data)

def get_x():
    print(data)
    return data["x"]