Steve Dower added the comment: Or if you first repair 2.7.11 and then install 2.7.12.
This error often happens because your pip installation is corrupt, and then pip fails to uninstall itself which aborts the whole installation. Generally repairing the install before uninstalling resolves it. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27564> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com