如何在wsgi文件（Flask）中设置apache2环境变量

Question

Currently I work with Flask micro framework. How to set Environment variables in wsgi file? I have done this in apache2 envvars file like this:

export PRODROOT=${PRODROOT:-/home/peter/Lv-164.UI/ecomap}
export PYSRCROOT=${PYSRCROOT:-${PRODROOT}/src/python}
export CONFROOT=${CONFROOT:-${PRODROOT}/etc}
export PYTHONPATH=${PRODROOT}/src/python

How I can do that in wsgi file? Thanks for your attention.

Answer 1

The wsgi file is just a Python file, so you can use os.environ to set environment variables for your code. Eg in your wsgi file:

import os
os.environ['PRODROOT'] = '/home/peter/Lv-164.UI/ecomap'
os.environ['PYSRCROOT'] = os.environ['PRODROOT'] + '/src/python'
os.environ['CONFROOT'] = os.environ['PRODROOT'] + '/etc'
os.environ['PYTHONPATH'] = os.environ['PRODROOT'] + '/src/python'

from yourpackage.yourapp import app as application

I'm not sure that setting PYTHONPATH will work in this scenario (though it's worth a try). If you're using mod_wsgi then you can set it with the WSGIPythonPath directive.

https://code.google.com/p/modwsgi/wiki/ConfigurationDirectives#WSGIPythonPath