Py.test command not found, but library is installed

问题

There are already two posts on stack overflow on this topic; however, none of them have resolved or addressed my specific situation.

I have installed pytest via pip install pytest. I am able to import the library in Python as well.

The problem is that when I try to use the py.test command in Terminal, I get py.test: command not found.

Does anyone have any insight as to why I am not able to use the command in the terminal?

EDIT: It even shows up as an installed package:

$ pip list
cycler (0.9.0)
matplotlib (1.5.1)
numpy (1.10.1)
pip (8.1.0)
py (1.4.31)
pyparsing (2.0.7)
pytest (2.9.0)
python-dateutil (2.4.2)
pytz (2015.7)
scipy (0.17.0)
setuptools (7.0)
six (1.10.0)
tensorflow (0.5.0)
vboxapi (1.0)
wheel (0.26.0)

回答1:

using python -m pytest will work for you.

Or if you using virtual environment and installed pytest on virtualenv you should then run py.test alongside your virtual environment.

Check this website can be useful:http://pythontesting.net/framework/pytest/pytest-introduction/

回答2:

Are you on a mac with homebrew by any chance?

I had the same issue and it basically came down to permissions/conflict with the mac os base installed python. pip install would not install or link stuff into /usr/local/bin (it happened with both virtualenv and pytest).

I uninstalled python 2.7 completely with homebrew (brew uninstall python).
Next, I reinstalled python with homebrew to fix pip (it was not a symlink in /usr/local/bin/pip where it should have been linked to Cellar) -- brew install python
Then I uninstalled pip with sudo -- sudo python -m pip uninstall pip to remove the pip owned by root
Now I uninstalled and reinstalled python with homebrew again to reinstall pip with the correct permissions brew uninstall python && brew install python
Next I fixed the python symlinks brew link python
Finally, pip install pytest worked! (and so did pip install virtualenv)

I found the information in the chosen answer from this post very helpful: https://superuser.com/questions/915810/pip-not-working-on-hombrew-python-2-7-install.

If you're not on a mac, sorry for the noise...

回答3:

I already had the latest version of pytest on macOS with Homebrew-installed Python 2.7 and this fixed it:

pip uninstall pytest
pip install pytest

回答4:

I had the same issue. I had pytest v2.8.3 installed and the binary was on my path but under the name py.test. Upgrading to v3.0.3 added the regular pytest executable to the path.

回答5:

I Fixed this issue via below steps. 1.First uninstall existing pytest. 2.Check python version. 3.then verify pytest version is supported with python version or not via github issue tracker. 4. via sudo install pytest sudo pip install pytest 5. verify pytest version and insatlled correctly or not. pip list pytest --version

6.run any test using pytest test_abc.py

回答6:

I may be late, but while exploring this I noticed that this can be because the Scripts folder for python is not present in the PATH.

For me this is my scripts folder:

C:\Python38\Scripts\

If the path is a problem then running pip install pytest should actually you give you the warning with the path it was added to.

This should be present in the path. If on windows, edit the environment variables and this location to the PATH.

For me the path was incorrect because of an improper installation of python

来源：https://stackoverflow.com/questions/35998992/py-test-command-not-found-but-library-is-installed

标签

terminal

command

pip

pytest