如何在不重新启动应用程序的情况下自动重新加载 python 模块？

Question

I am interested in adapting python file after I run the app. Suppose we have a script:

import time

while True:
    time.sleep(10)
    print(2)

I run it, so it prints number 2 every 10 seconds. I would like to be able to change 2 to 5 so that I don't need to rerun script, but output changed to 5.

This mechanism is somehow implemented in Django , after file is edited, data on server is reloaded.

Edit:

import time
from importlib import reload
import data

while True:
    reload(data)
    print(data.some_data)
    time.sleep(1)

something like this would do the job, but maybe there is better way of achieving such behaviour?

Answer 1

You could create a seperate file to manage dynamic content. And then import the data that you need from that file.

data.py

some_data = 10

script.py

import time
from .data import some_data

while True:
    time.sleep(10)
    print(some_data)

and then you can just edit the value in data.py to whatever value you want without restarting the script.