How to find all child modules in Python?

Question

While it is fairly trivial in Python to import a \"child\" module into another module and list its attributes, it becomes slightly more difficult when you want to import all

Answer 1

pkgutil.walk_packages() seems to be the right way to do this. Here's how I found a list of the available modules, and then imported one of them:

$ mkdir foo
$ touch foo/__init__.py
$ touch foo/bar.py
$ python
Python 3.8.2 (default, Jul 16 2020, 14:00:26) 
[GCC 9.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import foo
>>> from pkgutil import walk_packages
>>> list(walk_packages(foo.__path__))
[ModuleInfo(module_finder=FileFinder('/home/don/git/zero-play/zero_play/foo'), name='bar', ispkg=False)]
>>> from importlib import import_module
>>> bar = import_module('foo.bar')