Python 3.7 removes re._pattern_type

[ewdurbin]

Ref: python/cpython#1646

Moto uses re._pattern_type in vendored responses library RequestsMock._has_url_match, which has been removed/renamed to re.Pattern as of Python 3.7.

https://github.com/spulec/moto/blob/4184acc0d27b584a921939fb85467cebf27bb025/moto/packages/responses/responses.py#L221

I've filed a report with the upstream project at getsentry/responses#195

Python 3.7.0b3
moto 1.3.1

[spulec]

Thanks for opening the issue (and all the other amazing work you do for the python community)!

We recently unvendored responses with #1553 so I believe this issue can be closed.