Fix test_tarfile failure when gzip is not available The module would exist, but be empty if already imported. This change ensures we have gzip available.
Fix test_tarfile failure when gzip is not available
The module would exist, but be empty if already imported.
This change ensures we have gzip available.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator