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rik@hogbarn ~ $ python
Python 2.6.4 (r264:75706, Mar  1 2010, 17:04:42)
[GCC 4.4.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> import sys
>>> with open('/usr/src/linux/Makefile') as file:
...         head = [file.next() for x in range(4)]
...         print head
...         import  string
...         head = map(string.strip, head)
...         print head
...         head = dict(item.split("=") for item in head )
...         print head
...         for k,i in head.items():
...                 print k, i
...         print head['EXTRAVERSION']
...
['VERSION = 2\n', 'PATCHLEVEL = 6\n', 'SUBLEVEL = 33\n', 'EXTRAVERSION = -gentoo\n']
['VERSION = 2', 'PATCHLEVEL = 6', 'SUBLEVEL = 33', 'EXTRAVERSION = -gentoo']
{'SUBLEVEL ': ' 33', 'EXTRAVERSION ': ' -gentoo', 'VERSION ': ' 2', 'PATCHLEVEL ': ' 6'}
SUBLEVEL   33
EXTRAVERSION   -gentoo
VERSION   2
PATCHLEVEL   6
Traceback (most recent call last):
  File "<stdin>", line 11, in <module>
KeyError: 'EXTRAVERSION'
>>>