Remove some false alarms on checks for ambiguous fixer names with futurize -f ... (issue #56)

Author: edschofield

docs/whatsnew.rst

@@ -11,7 +11,12 @@ What's new in version 0.12.3
   classifiers and Travis-CI tests are now also run on Py3.4 (issue #67).
 - Add ``--version`` option for ``futurize`` and ``pasteurize`` scripts
   (issue #57).
+
 - Fix ``future.utils.ensure_new_type`` with ``long`` input (issue #65).
+
+- Remove some false alarms on checks for ambiguous fixer names with
+  ``futurize -f ...``.
+
 - Testing fixes:
     - Don't hard-code Python interpreter command in tests (issue #62).
     - Fix deprecated ``unittest`` usage in Py3 (also issue #62).

libfuturize/main.py

@@ -246,7 +246,8 @@ def main(args=None):
                     # Infer the full module name for the fixer.
                     # First ensure that no names clash (e.g.
                     # lib2to3.fixes.fix_blah and libfuturize.fixes.fix_blah):
-                    found = [f for f in avail_fixes if 'fix_{}'.format(fix) in f]
+                    found = [f for f in avail_fixes
+                             if f.endswith('fix_{}'.format(fix))]
                     if len(found) > 1:
                         print("Ambiguous fixer name. Choose a fully qualified "
                               "module name instead from these:\n" +