Does not work with PyTest

See this ticket in PyTest bug tracker: pytest-dev/pytest#4882 .

I don't know how you built the distributable package, but it looks like this:

Metadata-Version: 2.0
Name: openapi-spec-validator
Version: 0.2.6
Summary: UNKNOWN
Home-page: https://github.com/p1c2u/openapi-spec-validator
Author: Artur Maciag
Author-email: maciag.artur@gmail.com
License: Apache License, Version 2.0
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: Intended Audience :: Developers
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: 3.5
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Requires-Dist: jsonschema (<3)
Requires-Dist: PyYAML (>=3.13)
Requires-Dist: six
Requires-Dist: pathlib

# OpenAPI Spec validator
...

So, it installs pathlib regardless of what version of Python is used (interestingly, it works differently with different versions of Python / setuptools), but Python 7.1 setuptools 40.6.2 don't work with your library (downloaded from pypi).

[RonnyPfannschmidt]

as per https://pypi.org/project/pathlib/ pathlib is a unmaintained backport and pathlib2 should be used

Well, don't tell me this... I didn't use it :) The problem is it is used by others, and you cannot avoid it. (I'm kind of surprised I'm the first one to run into this problem, it's like nobody uses Swagger these days anymore?).

OMG. I confused myself by posting to both places. Sorry!

Now, I see that setup.py of this project has conditional dependency on Python 2, but the version downloaded from pypi doesn't have that change. However, the plot thickens... the previous version on pypi is conditionally dependant on Python 2. I.e. by downgrading to 0.2.5 I can solve this problem.

[p1c2u]

It was resolved with #68 Next release should fix it. Cheers.

[p1c2u]

Fix released with version 0.2.7`. Closing.