These are just some notes about working with processes in Python.

The module of interest is {{{os}}}. [[http://www.python.org/doc/current/lib/module-os.html|(os module documentation)]]

Environment variables are accessed through a dictionary, {{{os.environ}}}.

Processes are created with {{{os.popen}}}, [[http://www.python.org/doc/current/lib/os-newstreams.html#os-newstreams|described in os 6.1.2.]]

{{{
#!python
import os

# Export an environment variable
os.environ["FOO"] = "BAR"

# Make sure environment variable set for child processes
for line in os.popen("bash -c 'env'").read().splitlines():
    if line.startswith("FOO="):
        print line

# Since environment variable "FOO" is exported, and since child
# processes inherit environment variables from their parents, this
# works.
}}}