STINNER Victor <vstin...@python.org> added the comment:
Another way to gather the list of Python modules: pydoc help("modules") uses
pkgutil.walk_packages().
pydoc uses ModuleScanner which uses sys.builtin_module_names and
pkgutil.walk_packages().
pkgutil.walk_packages() calls pkgutil.iter_modules() which iterates on
sys.meta_path and sys.path, and calls iter_modules() on each importer.
For FileImporter, it iterates on os.listdir() on the importer path.
For zipimporter, it iterates on
zipimport._zip_directory_cache[importer.archive].
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue42955>
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