python 在 virtualenv 中使用鼻子的问题
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Problems using nose in a virtualenv
提问by Ryan
I am unable to use nose (nosetests) in a virtualenv project - it can't seem to find the packages installed in the virtualenv environment.
我无法在 virtualenv 项目中使用鼻子（nosetests） - 它似乎无法找到安装在 virtualenv 环境中的包。
The odd thing is that i can set
奇怪的是我可以设置
test_suite = 'nose.collector'
in setup.py and run the tests just fine as
在 setup.py 中运行测试就好了
python setup.py test
but when running nosetests straight, there are all sorts of import errors.
但是当直接运行鼻子测试时，会出现各种导入错误。
I've tried it with both a system-wide installation of nose and a virtualenv nose package and no luck.
我已经尝试过在系统范围内安装鼻子和 virtualenv 鼻子包，但没有运气。
Any thoughts?
有什么想法吗？
Thanks!!
谢谢！！
采纳答案by John Millikin
Are you able to run myenv/bin/python /usr/bin/nosetests? That should run Nose using the virtual environment's library set.
你能跑myenv/bin/python /usr/bin/nosetests吗？那应该使用虚拟环境的库集运行 Nose。
回答by edward
You need to have a copy of nose installed in the virtual environment. In order to force installation of nose into the virtualenv, even though it is already installed in the global site-packages, run pip installwith the -Iflag:
您需要在虚拟环境中安装一个nose 副本。为了强制将nose安装到virtualenv中，即使它已经安装在全局站点包中，请pip install使用以下-I标志运行：
(env1)$ pip install nose -I
From then on you can just run nosetestsas usual.
从那时起，您就可以nosetests照常运行了。
回答by Andrea Zonca
In the same situation I needed to reload the virtualenvfor the path to be correctly updated:
在同样的情况下，我需要重新加载virtualenv路径才能正确更新：
deactivate
env/bin/activate
回答by npinto
I got a similar problem. The following workaround helped:
我遇到了类似的问题。以下解决方法有所帮助：
python `which nosetests`
(instead of just nosestests)
（而不仅仅是nosestests）
回答by Pavel Repin
Here's what works for me:
以下是对我有用的内容：
$ virtualenv --no-site-packages env1
$ cd env1
$ source bin/activate # makes "env1" environment active,
# you will notice that the command prompt
# now has the environment name in it.
(env1)$ easy_install nose # install nose package into "env1"
I created a really basic package slitherthat had, in its setup.py, same test_suiteattribute as you mentioned above. Then I placed the package source under env1/src.
我创建了一个非常基本的包slither，它的属性与您上面提到的setup.py相同test_suite。然后我将包源放在env1/src.
If you looked inside env1/src, you'd see:
如果你往里面看env1/src，你会看到：
slither/setup.py
slither/slither/__init__.py
slither/slither/impl.py # has some very silly code to be tested
slither/slither/tests.py # has test-cases
I can run the tests using testsubcommand:
我可以使用test子命令运行测试：
(env1)$ pushd src/slither
(env1)$ python setup.py test
# ... output elided ...
test_ctor (slither.tests.SnakeTests) ... ok
test_division_by_zero (slither.tests.SnakeTests) ... ok
Ran 2 tests in 0.009s
OK
(env1)$ popd
Or, I can run the same tests with nosetests:
或者，我可以运行相同的测试nosetests：
(env1)$ pushd src
(env1)$ nosetests slither/
..
Ran 2 tests in 0.007s
OK
(env1)$ popd
Also note that nosetestscan be picky about executables. You can pass --exeif you want it to discover tests in python modules that are executable.
另请注意，nosetests对可执行文件可能很挑剔。--exe如果您希望它发现可执行的 Python 模块中的测试，则可以通过。
回答by eggonlegs
If all else fails, try installing nose in your venv, and/or run nosetests-2.7. I believe @andrea-zonca's answer has the same effect if your venv python is 2.7
如果所有其他方法都失败了，请尝试在您的 venv 中安装鼻子，和/或运行nosetests-2.7. 如果您的 venv python 是 2.7，我相信@andrea-zonca 的答案具有相同的效果
回答by Josh Bleecher Snyder
Perhaps this is a recent change, but for me, when I installed nosetests through pip, there was a nosetests executable installed in .virtualenvs/<env>/bin, which (unsurprisingly) operates correctly with the virtualenv.
也许这是最近的变化，但对我来说，当我通过 pip 安装鼻子测试时，在 中安装了一个鼻子测试可执行文件.virtualenvs/<env>/bin，它（不出所料）与 virtualenv 一起正常运行。
回答by orluke
You might have a noseteststhat is installed somewhere else in your PATHwith higher priority than the one installed in your virtualenv. A quick way to give the nosemodule and associated nosetestsscript installed in your current virtualenv top priority is to edit your PATH:
您可能有一个nosetests安装在您的其他地方的PATH优先级高于安装在您的 virtualenv 中的那个。为当前 virtualenv 中安装的nose模块和相关nosetests脚本提供最高优先级的快速方法是编辑您的PATH：
export PATH=/path/to/current/virtualenv/bin:$PATH
