Issue
I copy a python virtualenv which holds many packages from host1 to host2. However, I activate the copied virtualenv on host2, and use pip list to show the installed packages, the installed packages disappeared.
I check the files in <virtualenv>/lib/python2.7/site-packages/ the installed packages are still over there. So why pip list show nothing.
Solution
Instead of copying the actual env, I would advice you to create a requirements file in the original env like this
pip freeze > requirements.txt
Then copy that over the the second location and run
pip install -r requirements.txt
Answered By - Harald Nordgren
