Permissions on files installed by pip?

Jean-Michel Pichavant jeanmichel at
Fri Oct 17 15:13:50 CEST 2014

----- Original Message -----
> From: "Adam Funk" <a24061 at>
> To: python-list at
> Sent: Thursday, 16 October, 2014 9:29:46 PM
> Subject: Permissions on files installed by pip?
> I've been using the python-nltk package on Ubuntu, but I need ntlk
> 3.0
> now.  I used 'sudo aptitude purge python-nltk' to get rid of my
> existing installation, & followed instructions on the nltk website
> [1]
> starting at step 4 (since I already have python-pip & python-numpy
> packages installed).
> $ sudo pip install -U
> I couldn't get it to work, until I realized that the permissions &
> ownership on /usr/local/lib/python2.7/dist-packages were 'drwx--S---
> root staff'.  A 'chmod -R a+rX' on that directory seems to have fixed
> it.  Is it normal for sudo pip install to set the permissions that
> way, or did I do something wrong?

On debian wheezy:

ls -al /usr/local/lib/python2.7/dist-packages          

drwxrwsr-x 5 root staff 4.0K Jun 30 15:16 ./

I'm not sure pip is responsible for this anyway, so my money goes on "you did something wrong" :)



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