closes bpo-37675: Use pkgutil.iter_modules to find fixers in a package rather than listdir. (14942)
diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
index 7841b99..55fd60f 100644
--- a/Lib/lib2to3/refactor.py
+++ b/Lib/lib2to3/refactor.py
@@ -14,6 +14,7 @@
# Python imports
import io
import os
+import pkgutil
import sys
import logging
import operator
@@ -30,13 +31,12 @@
def get_all_fix_names(fixer_pkg, remove_prefix=True):
"""Return a sorted list of all available fix names in the given package."""
pkg = __import__(fixer_pkg, [], [], ["*"])
- fixer_dir = os.path.dirname(pkg.__file__)
fix_names = []
- for name in sorted(os.listdir(fixer_dir)):
- if name.startswith("fix_") and name.endswith(".py"):
+ for finder, name, ispkg in pkgutil.iter_modules(pkg.__path__):
+ if name.startswith("fix_"):
if remove_prefix:
name = name[4:]
- fix_names.append(name[:-3])
+ fix_names.append(name)
return fix_names