Question

I have been trying to set up Python-android environment, and kept getting this error message:

~$ sudo apt-get install build-essential patch git-core ccache ant pip python-devsudo: /var/lib/sudo/plaix writable by non-owner (040777), should be mode 0700
[sudo] password for plaix: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package pip

Answer 1

In Ubuntu, pip is provided by the python-pip package. You can install it in the Software Center, or, if you prefer to use the command line:

sudo apt-get update && sudo apt-get install python-pip

If you have not already installed python-dev and build-essential, you should install them too. (But it seems your apt-get command might have successfully installed them. If you’re not sure, you can check by trying to install them again. Or with apt-cache policy python-dev build-essential.)

Once the necessary software is installed, if you wish to update it further, you can do so with pip itself, by running:

sudo pip install --upgrade pip 
sudo pip install --upgrade virtualenv

Source: How to install pip on Ubuntu by Eliot (dated, but should still apply).