Pip 未安装在 virtualenv 中

Question

I've installed pip w/o system packages.

which pip
/home/pdaly/envs/py3/bin/pip

which python
/home/pdaly/envs/py3/bin/python

When I install via pip inside the virtualenv it seems to be using the system pip instead of the virtual env pip despite which pip pointing to the env. I get the following error

PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/pandas-0.23.4.dist-info'

How do I fix this?

note: there are 20-30 people all using this machine installing packages directly to the system python...

(py3) pdaly@gpu01:~$ /home/pdaly/envs/py3/bin/python -c "import os, sys; print(os.linesep.join(sys.path))"
/home/pdaly/<private repo 1>/lib
/home/pdaly/<private repo 2>
/home/pdaly/<private repo 3>
/home/pdaly/envs/py3/lib/python35.zip
/home/pdaly/envs/py3/lib/python3.5
/home/pdaly/envs/py3/lib/python3.5/plat-x86_64-linux-gnu
/home/pdaly/envs/py3/lib/python3.5/lib-dynload
/usr/lib/python3.5
/usr/lib/python3.5/plat-x86_64-linux-gnu
/home/pdaly/envs/py3/lib/python3.5/site-packages

(py3) pdaly@gpu01:~$ echo $PYTHONPATH
/home/pdaly/<private repo 1>/lib/:/home/pdaly/<private repo 2>/:/home/pdaly/<private repo 3>/

Answer 1

As mentioned in one of the comments (kudos @mydaemon), the venv you're working with is a python3 environment, which is not compatible with python2 libs/scripts. In addition, if you didn't activate your environment, then any python scripts/tools will continue to run on the system python (which looks like python2.7 in this case).

To get this working as python3, simply: ( edit : new info shows that this env is indeed an activated python3 env, so this won't work).

 . ${HOME}/envs/py3/bin/activate pip install panda

To use python2:

virtualenv --python=python2.7 ${HOME}/envs/py2
. ${HOME}/envs/py2/bin/activate
pip install panda

Edit : Pandas on PyPi is a python 2.x library and will not work with pip on python3. The Pandas website recommends installing via anaconda