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POPython packages not installing in virtualenv using pip
 

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  1. POPython packages not installing in virtualenv using pip
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    <p><strong>I'm having trouble installing twisted</strong></p> <pre><code>pip --version </code></pre> <blockquote> <p>pip 1.1 from /home/chris/GL/GLBackend/glenv/lib/python2.7/site-packages/pip-1.1-py2.7.egg (python 2.7)</p> </blockquote> <p><strong>Create a virtual environment</strong></p> <pre><code>chris@chris-mint ~/GL/GLBackend $ sudo virtualenv -p python2.7 glenv </code></pre> <blockquote> <p>Running virtualenv with interpreter /usr/bin/python2.7 New python executable in glenv/bin/python2.7 Also creating executable in glenv/bin/python Installing distribute.............................................................................................................................................................................................done. Installing pip...............done.</p> </blockquote> <p><strong>Just in case, I'll enable all permissions</strong></p> <pre><code>chris@chris-mint ~/GL/GLBackend $ sudo chmod -R 777 glenv chris@chris-mint ~/GL/GLBackend $ source glenv/bin/activate (glenv)chris@chris-mint ~/GL/GLBackend $ pip freeze </code></pre> <blockquote> <p>argparse==1.2.1 distribute==0.6.24 wsgiref==0.1.2</p> </blockquote> <p><strong>twisted is not listed here as installed</strong></p> <pre><code>(glenv)chris@chris-mint ~/GL/GLBackend $ sudo pip install twisted </code></pre> <blockquote> <p>Requirement already satisfied (use --upgrade to upgrade): twisted in /usr/local/lib/python2.7/dist-packages Requirement already satisfied (use --upgrade to upgrade): zope.interface>=3.6.0 in /usr/local/lib/python2.7/dist-packages (from twisted) Requirement already satisfied (use --upgrade to upgrade): distribute in /usr/local/lib/python2.7/dist-packages (from zope.interface>=3.6.0->twisted) Cleaning up... (glenv)chris@chris-mint ~/GL/GLBackend $ pip uninstall twisted Cannot uninstall requirement twisted, not installed Storing complete log in /home/chris/.pip/pip.log</p> </blockquote> <p><strong>But when I install it it says that its already installed. Force the install:</strong></p> <pre><code>sudo pip install -I twisted </code></pre> <blockquote> <p>Downloading/unpacking twisted Downloading Twisted-12.3.0.tar.bz2 (2.6Mb): 2.6Mb downloaded Running setup.py egg_info for package twisted . . .</p> <p>Successfully installed twisted zope.interface distribute Cleaning up...</p> </blockquote> <p><strong>And yet it still isn't installed</strong></p> <pre><code>(glenv)chris@chris-mint ~/GL/GLBackend $ pip freeze </code></pre> <blockquote> <p>argparse==1.2.1 distribute==0.6.24 wsgiref==0.1.2</p> </blockquote> <p>**When I try running Python scripts which use twisted, I get an error saying that twisted is not installed. That is:</p> <blockquote> <p>ImportError: No module named twisted.python**</p> </blockquote>
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    1. COWhy are you using `sudo` with `pip install` under `virtualenv`? I don't know for sure that `pip` tries to install to the system (that is, to put still in `/usr/local/lib/python2.7`, as you're seeing, instead of `~/glenv`, as you want) when you use `sudo`, but it's at least plausible. (You also shouldn't use `sudo` to create your venv in the first place.)
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      1. USabarnert
    2. CO@abarnert already answered you, and you seem to be experiencing the same problem as http://stackoverflow.com/q/14665330/565999
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      1. USHugo Tavares
 

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