lgtm http://codereview.appspot.com/5271053/diff/4002/expand-symlinks.py File expand-symlinks.py (right): http://codereview.appspot.com/5271053/diff/4002/expand-symlinks.py#newcode35 expand-symlinks.py:35: IGNORE_IN_SAMPLES = set(['apiclient', 'oauth2client', 'uritemplate']) Is there any use for making these patterns rather than explicit?