Python py.test：错误：无法识别的参数：--cov=ner_brands --cov-report=term-missing --cov-config
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py.test: error: unrecognized arguments: --cov=ner_brands --cov-report=term-missing --cov-config
提问by Hello lad
when I am trying to run my test through command line
当我尝试通过命令行运行我的测试时
py.test file_name.py
I got this error:
我收到此错误：
py.test: error: unrecognized arguments: --cov=ner_brands --cov-report=term-missing --cov-config
How can I fix this?
我怎样才能解决这个问题？
采纳答案by sdonk
pytest-cov packageis required if you want to pass --cov arguments to pytest, by default it should not be passed though. Are you using a modified version of py.test?
如果要将 --cov 参数传递给 pytest，则需要pytest-cov 包，但默认情况下不应传递它。您使用的是 py.test 的修改版本吗？
pip install pytest-cov
would fix your issue.
会解决你的问题。
回答by Samuel Phan
For those who use CentOS 6, the version of setuptoolsis old and you need to upgrade it also:
对于使用 CentOS 6 的用户，版本setuptools较旧，您还需要升级它：
pip install pytest-cov
pip install --upgrade setuptools
Just after installing pip install pytest-cov:
安装后pip install pytest-cov：
~ # py.test --version
This is pytest version 3.0.5, imported from /usr/lib/python2.6/site-packages/pytest.pyc
~ # pip install --upgrade setuptools
[...]
Successfully installed setuptools-30.3.0
~ # py.test --version
This is pytest version 3.0.5, imported from /usr/lib/python2.6/site-packages/pytest.pyc
setuptools registered plugins:
pytest-cov-2.4.0 at /usr/lib/python2.6/site-packages/pytest_cov/plugin.py
回答by Brontes
sdonk's answer helped me. But since I use pipenv, I had to run
sdonk 的回答帮助了我。但由于我使用pipenv，我不得不运行
pipenv install pytest_cov
回答by daveruinseverything
If the other answers here didn't work for you, you may have py.test installed somewhere else in your system. In my case, I ran into the issue described here inside a virtual environment, but it turned out that pytest was defaulting to my system installation (which did not have pytest-cov installed).
如果此处的其他答案对您不起作用，则您可能在系统中的其他位置安装了 py.test。就我而言，我在虚拟环境中遇到了此处描述的问题，但结果证明 pytest 默认为我的系统安装（未安装 pytest-cov）。
Deactivate your virtual environment or start a new shell and run the following to confirm:
停用您的虚拟环境或启动一个新的 shell 并运行以下命令进行确认：
pip3 freeze | grep pytest
(or pip freeze | grep pytestif you're running python2)
（或者pip freeze | grep pytest如果你正在运行 python2）
If you find it, try uninstalling it, then reactivate your virtual environment and try again.
如果找到，请尝试卸载它，然后重新激活您的虚拟环境并重试。
回答by Souradeep Nanda
Turns out my versions mismatched.
原来我的版本不匹配。
I changed the versions to
我将版本更改为
pytest="*"
pytest-cov="*"
and it started to work.
它开始起作用了。
