cryptography AssertionError: sorry, but this version only supports 100 named groups

Question

I\'m installing several python packages via pip install on travis,

language: python
python:
- \'2.7\'
install:
- pip install -r requirements/env.tx         


        

Answer 1

There is a bug with PyCParser - See https://github.com/pyca/cryptography/issues/3187

The work around is to use another version or to not use the binary distribution.

pip install git+https://github.com/eliben/pycparser@release_v2.14

or

pip install --no-binary pycparser