reloading module which has been imported to another module

Question

Let\'s face it, the whole business of reloading python code after changing it is a mess. I figured out awhile back that calling import at the in

Answer 1

Ok, I'm not sure that qualifies as an answer without a change to the code, but... at least, that doesn't involve a change to module1.

You can use some module wrapper class, that saves loaded modules before and after loading module1 and that provides a reload method, something like that:

import sys

class Reloader(object):
    def __init__(self, modulename):
        before = sys.modules.keys()
        __import__(modulename)
        after = sys.modules.keys()
        names = list(set(after) - set(before))
        self._toreload = [sys.modules[name] for name in names]

    def do_reload(self):
        for i in self._toreload:
            reload(i)

Then load module1 with:

reloader = Reloader('module1')

Atfer that you can modify module2 and reload it in interpreter with:

reloader.do_reload()