Github user leifurhauks commented on the issue: https://github.com/apache/tinkerpop/pull/340 I believe the failures are due to the fact that the aenum package (introduced in 8ee2904 ) is not installed in the CI environment. As a result, the gremlin_python module errors on import. Since 146f476, the test suite adds the contents of PYTHONPATH to sys.path, but aenum still needs to be downloaded and built. One possibility would be to create a virtualenv in the working dir, install aenum to that virtualenv, and add it to PYTHONPATH.
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