在python的标准库中，_winreg.pyd可以操作windows的注册表，另外第三方的win32库封装了大量的windows api，使用起来也很方便。不过这里介绍的是使用_winreg操作注册表，毕竟是python自带的标准库，无需安装第三方库。
下面的例子是通过python获取windows xp下已经安装的补丁号。windows的补丁号都在“hkey_local_machine\software\\microsoft\\updates”下，通过循环下面所有的目录节点，如果找到的名称符合正则表达式kb(\d{6}).*，则表示是一个补丁号。
从例子可以看出操作起来非常的简单和快速。
代码如下:
# -*- coding: utf-8 -*-# 获取windows的已打的补丁号
from _winreg import *import re
def subregkey(key, pattern, patchlist): # 个数 count = queryinfokey(key)[0] for index in range(count): # 获取标题 name = enumkey(key, index) result = patch.match(name) if result: patchlist.append(result.group(1)) sub = openkey(key, name) subregkey(sub, pattern, patchlist) closekey(sub)
if __name__ == ‘__main__’: patchlist = [] updates = ‘software\\microsoft\\updates’ patch = re.compile(‘(kb\d{6}).*’) key = openkey(hkey_local_machine, updates) subregkey(key, patch, patchlist) print ‘count: ‘ + str(len(patchlist)) for p in patchlist: print p closekey(key)
下面内容转自 python standard library12.13 the _winreg module(windows only, new in 2.0) the _winreg module provides a basic interface to the windows registry database. example 12-17 demonstrates the module.
example 12-17. using the _winreg modulefile: winreg-example-1.py
代码如下:
import _winreg
explorer = _winreg.openkey( _winreg.hkey_current_user, “software\\microsoft\\windows\currentversion\\explorer” )
#list values owned by this registry key try: i = 0 while 1: name, value, type= _winreg.enumvalue(explorer, i) print repr(name), i += 1except windowserror: print
value, type = _winreg.queryvalueex(explorer, “logon user name”)
printprint “user is”, repr(value)
‘logon user name’ ‘cleanshutdown’ ‘shellstate’ ‘shutdown setting”reason setting’ ‘faultcount’ ‘faulttime’ ‘iconunderline’…
user is u’effbot’