Reload module on modification

Question

Is there idiomatic way to reload python modules on edit? I am keeping configuration in my_config_module.py file and want to automatically detect and load config changes. Currently I am trying something like this but I find it ugly and unsafe:

import my_config_module
import importlib

last_modification = os.stat('my_config_module.py').st_mtime

while True:
    last_mod = os.stat('my_config_module.py').st_mtime
    if last_mod != last_modification:
        importlib.raload(my_config_module)
        last_modification = last_mod 
    # main loop, some of my code

You could take a look at how %autoreload is implemented for IPython. — kthy
– kthy, Commented Oct 28, 2019 at 13:55

luis.parravicini · Accepted Answer · 2019-10-28 13:54:10Z

1

You should keep data in a separate file and reload it when it's modified (and thus, avoiding the need of reloading code).

answered Oct 28, 2019 at 13:54

luis.parravicini

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4 Comments

bartop Over a year ago

this is what I wanted to avoid, don't want to parse anything from json or xml

gstukelj Over a year ago

This should be a comment not an "answer".

blubberdiblub Over a year ago

@gst They still have a point, though. Configuration should usually be kept in a format that lends itself well to storing configuration data, not in code. (Also: safety). If OP doesn't like JSON, they can use YAML or TOML or similar that has a friendlier structure. Python modules are not meant to be reloaded on a regular basis.

gstukelj Over a year ago

@blubberdiblub I was not questioning the validity of the raised point and I did not downvote the answer, just voiced my opinion by posting a comment.

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