Can not use packages in Virtual Environment in Linux

Question

So, I use Virtual Environment for my project python/django. I can activate the Virtual Environment in my server. Please see the below result:

But when I use the "which pip" command or "which python" command. It can not specify the pip or python in Virtual Environment. What you can see the below demo. It used the pip and python in my server instead of Virtual Environment

So what's happening? Please help me?

Thanks for your helping!

That doesn't make much sense, your virtualenv was set up based on a certain version of python. Why would you need to specify it more? — Sayse, Apr 14 '16 at 07:19
when I entered the "python manage.py runserver" command. Some modules can'nt be run. So I use "which python" or "which pip" to check it. — Duy Trần, Apr 14 '16 at 07:22
Virtualenv setup needs python and pip. virtualenV can only have the packages and modules of python. — Muhammad Shoaib, Apr 14 '16 at 07:24
No, I dont think so. I created new virtualenV and check it with "which python" command line. It specified to python in virtualenV . Result: "/var/www/testenv/bin/python" — Duy Trần, Apr 14 '16 at 07:28
Yes, but you have not installed python into your virtualenv. Whenever you create a new virtualen, it creates a bin/ directory into your virtualenv with the same python running on your server. — Muhammad Shoaib, Apr 14 '16 at 07:34
I copied my virtualenV from other server and It run successly before in my old server. I reliably installed python into my virtualen before. — Duy Trần, Apr 14 '16 at 07:40
You should re-create your virtualenv by getting packages from your original virtualenv **pip freeze > requirements.txt**. Then you re-install them by using **pip install -r requirements.txt**. I have no faith in the virtualenv copy. — Samuel Dauzon, Apr 14 '16 at 07:53
@jedema yes, you are right! This is answer: http://stackoverflow.com/questions/9207430/how-to-copy-clone-a-virtual-environment-from-server-to-local-machine — Duy Trần, Apr 14 '16 at 08:00

Samuel Dauzon · Accepted Answer · 2016-04-14T08:09:23.143

1

Rather than copy a virtualenv, it's better to create a new one. To copy your packages from your original virtualenv, you should use :

pip freeze > requirements.txt

In order to re-install your packages in the final virtualenv you use :

pip install -r requirements.txt

edited Apr 14 '16 at 08:09

answered Apr 14 '16 at 08:03

Samuel Dauzon

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Can not use packages in Virtual Environment in Linux

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