Getting python path associated with default python version

Getting python path associated with default python version:

python -c 'import sys, pprint; pprint.pprint(sys.path)'





Semicolons to delimit lines, pprint to make the output pretty, sys.path to see what will actually be called. 

In my case I learned that my virtual environment version of python is calling libraries outside of that environment.

Lessons learned: don't remove python3 on Ubuntu. Also, how to get a python3 virtual environment with ubuntu 14.4

I was trying to create a virtual environment for python3.4 when I ran into the problem described here:

https://lists.debian.org/debian-python/2014/03/msg00045.html

Apparently, python 3.4 is deliberately broken by default in a way that pops up when you try to set up the virtual environment in the ordinary way.  To quote the source:

The current situation in the Python 3.4 package  

is suboptimal because:

% pyvenv-3.4 /tmp/zz
Error: Command '['/tmp/zz/bin/python3.4',  

'-Im', 'ensurepip', '--upgrade', '--default-pip']'  

returned non-zero exit status 1

Although `virtualenv -p python3.4 /tmp/zz` does work.

The bottom line in the quote above provided the key solution.  But only after my big mistake.

My big mistake: removing python3

apt has me so spoiled that instead of turning to Google with the error message, I tried removing python3 with the plan to then reinstall it.  It was while watching the messages pour out of package after package being removed that I realized my mistake.  I had pulled out a critical part of the modern ubuntu environment and everything built on top of it was being removed.  So I'm backing up all files on that installation and re-installation is coming soon.

nginx, postgresql, django, virtualenv

Nice tutorial here on Digital Ocean:
https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-django-with-postgres-nginx-and-gunicorn

The instructions fell apart a bit once I got to the section configuring postgres.  Basically, when I expected to see a query about a role name it skipped that and started asking me about a password.

So for the configuration of postgres on Ubuntu, I recommend skipping over to https://help.ubuntu.com/community/PostgreSQL  .

After that I went back to the guide.

I found that since I was using python3 and because of a bug in 'pip' where it wants to install things globally, I had to change the

'pip install psycopg2' inside my virtual environment to
'pip3 install psycopg2' to get a local installation with python3.

Next, there is a depracated command in the tutorial that no longer works.
Replace

gunicorn_django --bind yourdomainorip.com:8001

with

 gunicorn myapp.wsgi:application --bind yourdomainorip:8001