问题
I am using Django 1.3.7 and python 2.7.6 on windows7 I got an error when I executing my manage.py in this line of code
import shutil, sys, virtualenv, subprocess
amd running it, I got this error
C:\Django-Proj\>python manage.py update_ve
Traceback (most recent call last):
File "manage.py", line 4, in <module>
import shutil, sys, virtualenv, subprocess
ImportError: No module named virtualenv
Does anyone have an Idea about my case?
回答1:
Install virtualenv using pip install virtualenv.
If you have it already installed, try reinstalling it by removing it with pip uninstall virtualenv and then reinstalling it.
Good Luck.
回答2:
I had to install virtualenv with the -H flag to set HOME variable to target user's home dir.
sudo -H pip install virtualenv
回答3:
I think the problem is you need sudo to globally install virtualenv.
> pip install virtualenv
Could not find an activated virtualenv (required).
> sudo pip install virtualenv
Downloading/unpacking virtualenv
...
But this creates files readable only by root (depending on the umask). In this case, uninstalling/reinstalling may not always help.
You can check with ls -la /usr/local/lib/python2.7/dist-packages/virtualenv.py (replacing 2.7 with whatever version you have or are targeting).
My solution was simply:
sudo chmod -R o+rX /usr/local/lib/python2.7
回答4:
I just ran into this same problem. I had to pip uninstall virtualenv as a user with admin rights, then pip install virtualenv as a normal user. I think it's some kind of permissions issue if you installed virtualenv under admin rights.
回答5:
>virtualenv
ImportError: No module named 'virtualenv'
>pip uninstall virtualenv
PermissionError: [Errno 13] Permission denied:
>sudo pip uninstall virtualenv
Successfully uninstalled virtualenv-15.1.0
>pip install virtualenv
Collecting virtualenv
>virtualenv
Options:
Bingo!
回答6:
I had the same problem when I created my virtualenv via pycharm and installed requirements with pycharm. After trail and error , I found that installed requirements are not taken into account by the virtualenv.
The solution is to reinstall all requirements once you have activated your virtualenv:
venv\scripts\activate
python -m pip install -r YourRequirements.txt
Next time I'd better create my virtualenv directly with command line
回答7:
Use pip3 instead of pip. I had the same issue and pip3 worked for me.
$ pip3 install virtualenv
$ virtualenv venv --python=python3
来源：https://stackoverflow.com/questions/21070369/importerror-no-module-named-virtualenv