foo.ini

# this is a comment
[default]
foo = yes
bar = no
cam = maybe
var = 23
prefix = /var/lib/
dir = %(prefix)s/bar/

get.py

#!/usr/bin/python
import ConfigParser
import os
import sys
config = ConfigParser.ConfigParser()
_execdir = os.path.dirname(sys.argv[0])
_configfile = os.path.join(_execdir,'foo.ini')
config.read(_configfile)
print _configfile

# print out a var from config
print config.get('default', 'foo', 0) # -> "Python is fun!"

# set the configs into global vars
for foo in config.items('default'):
  item, value = foo
  globals()[item] = value

print "globals"
# dir should come from the config file
print dir