Pip 使用 virtualenv 将软件包安装在错误的目录中

Question

With Python 3.7 on OS XI set up a virtual environment then

    $ source venv/bin/activate
    $ pip install numpy
    $ which pip 
pip is /Users/me/PycharmProjects/Test1/venv/bin/pip
(venv) 

But rather than installing in the virtual environment numpy is installed in

/usr/local/lib/python2.7

and numpy doesn't appear in pip list

The issue occurs with both Python installed via the Python download or via brew .

What possible settings could be causing the package to be installed in the wrong location.

Answer 1

To answer my own question.

There was an invisible

~/.config/pip/pip.conf 

file. That contained these lines:

[global]
target = /usr/local/lib/python2.7/site-packages

This file was a few years old, so I'm unsure how it got there but removing it resolved the issue.

Answer 2

What worked for me :

1. I just created a pip.ini file by myself on my venv root folder .
2. filled that file like this :

[global]

target=D:\\Dropbox\\online store\\django\\ve\\lib\\site-packages

3)after restarting venv, by using this command

python -m pip install <package name>

now I am able to install packages on my venv ( instead of being installed globally )

Answer 3

I had this issue because I renamed the root directory of my project. Looking at the venv/bin/activate script, I could see references to the old name.

Could probably fix it by hand, but I just deleted the venv folder and re-created it.