Steven D'Aprano wrote:
> I'm looking for a programmatic way to get a list of all Python modules
> and packages. Not just those already imported, but all those which
> *could* be imported.
>
> I have a quick-and-dirty function which half does the job:
>
>
> def get_modules():
> extensions = ('.py', '.pyc', '.pyo', '.so', '.dll')
> matches = set()
> for location in sys.path:
> if location == '': location = '.'
> if os.path.isdir(location):
> for name in os.listdir(location):
> base, ext = os.path.splitext(name)
> if ext in extensions:
> matches.add(base)
> return sorted(matches)
>
>
>
> but I know it's wrong (it doesn't handle packages correctly, or zip
> files, doesn't follow .pth files, has a very naive understanding of cross-
> platform issues, fails to include built-in modules that don't live in the
> file system, and probably more).
>
> Is this problem already solved? Can anyone make any suggestions?
$ python3 -m pydoc -b
shows a page with modules that I think is more complete than what you have.
A quick glance at the implementation suggests that the hard work is done by
pkgutil.iter_modules()
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