Comment 2 for bug 1717545

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Emilien Macchi (emilienm) wrote : Re: python 2.7.5-50 breaks PyMySQL in TripleO CI

so I think this is something that broke in Python.

See: https://centos.pkgs.org/7/centos-x86_64/python-2.7.5-58.el7.x86_64.rpm.html

2017-01-18 - Charalampos Stratakis <email address hidden> - 2.7.5-50
- Fix incorrect parsing of certain regular expressions
Resolves: rhbz#1373363

https://bugzilla.redhat.com/show_bug.cgi?id=1373363

So when upgrading from centos 7.3 to centos 7.4, we upgraded Python from python-2.7.5-48.el7.x86_64 to python-2.7.5-58.el7.x86_64, which contains the patch in 2.7.5-50.