Hello,
I've try to install p4a using pip install python-for-android command
but I have an error IOError: [Errno 13] Permission denied: '/lib/python2.7/site-packages/sh.py'
In case of using sudo pip install python-for-android command I have warnings about cache folders.
Everything is ok using --user flag, but command p4a is not available from command line
P.S. /usr/local/bin in PATH