在PyDev中配置py.test（Python 3，Mac）

Question

I have a Mac and have installed py.test to the Python 3 library (instead of Apple's standard Python 2.7 library). This is because I'm using Python 3.

When I run py.test in PyDev, however, the following error occurs. Any explanation on how to solve this? I've pondered this question for quite some time.

collected 1 items
INTERNALERROR> Traceback (most recent call last):
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/main.py", line 96, in wrap_session
INTERNALERROR>     session.exitstatus = doit(config, session) or 0
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/main.py", line 130, in _main
INTERNALERROR>     config.hook.pytest_collection(session=session)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 745, in __call__
INTERNALERROR>     return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 339, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 334, in <lambda>
INTERNALERROR>     _MultiCall(methods, kwargs, hook.spec_opts).execute()
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 614, in execute
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/main.py", line 139, in pytest_collection
INTERNALERROR>     return session.perform_collect()
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/main.py", line 592, in perform_collect
INTERNALERROR>     config=self.config, items=items)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 745, in __call__
INTERNALERROR>     return self._hookexec(self, self._nonwrappers + self._wrappers, kwargs)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 339, in _hookexec
INTERNALERROR>     return self._inner_hookexec(hook, methods, kwargs)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 334, in <lambda>
INTERNALERROR>     _MultiCall(methods, kwargs, hook.spec_opts).execute()
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/vendored_packages/pluggy.py", line 614, in execute
INTERNALERROR>     res = hook_impl.function(*args)
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/mark.py", line 84, in pytest_collection_modifyitems
INTERNALERROR>     if not matchmark(colitem, matchexpr):
INTERNALERROR>   File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/_pytest/mark.py", line 124, in matchmark
INTERNALERROR>     return eval(markexpr, {}, MarkMapping(colitem.keywords))
INTERNALERROR>   File "<string>", line 1
INTERNALERROR>     axfail=2
INTERNALERROR>           ^
INTERNALERROR> SyntaxError: invalid syntax

Here's a picture:

Image

Notes: I've installed PyDev bundled in LiClipse. I've configured the py.test test runner according to the documentation:

--maxfail=2 --tb=native

I then ran a simple py.test test file according to py.test's documentation:

def func(x):
    return x + 1

def test_answer():
    assert func(3) == 5

Answer 1

The pytest configuration seems correct.

So, some things to check:

1. Can you run it in the command line (out of LiClipse) with py.test filename ?

2. How exactly are you running the tests? (Ctrl+F9 on that file or running a folder?)

The error seems to be when evaluating a mark in pytest (ie: pytest.mark.xxx), is it possible that you have some invalid mark in some other part of your project?