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。

# -*- coding: utf-8 -*-# 获取Windows的已打的补丁号from _winreg import *import redef 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 Module
File: winreg-example-1.py

import _winregexplorer = _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: printvalue, 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'

好了这篇文章就先介绍到这了