在Python的標(biāo)準(zhǔn)庫中，_winreg.pyd可以操作Windows的注冊(cè)表，另外第三方的win32庫封裝了大量的Windows API，使用起來也很方便。不過這里介紹的是使用_winreg操作注冊(cè)表，畢竟是Python自帶的標(biāo)準(zhǔn)庫，無需安裝第三方庫。

下面的例子是通過Python獲取Windows XP下已經(jīng)安裝的補(bǔ)丁號(hào)。Windows的補(bǔ)丁號(hào)都在“HKEY_LOCAL_MACHINE/SOFTWARE//Microsoft//Updates”下，通過循環(huán)下面所有的目錄節(jié)點(diǎn)，如果找到的名稱符合正則表達(dá)式KB(/d{6}).*，則表示是一個(gè)補(bǔ)丁號(hào)。

從例子可以看出操作起來非常的簡(jiǎn)單和快速。
代碼如下:
# -*- coding: utf-8 -*-
# 獲取Windows的已打的補(bǔ)丁號(hào)

from _winreg import *
import re

def subRegKey(key, pattern, patchlist):
    # 個(gè)數(shù)
    count = QueryInfoKey(key)[0]
    for index in range(count):
        # 獲取標(biāo)題
        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)
   
下面內(nèi)容轉(zhuǎn)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

代碼如下:
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 += 1
except WindowsError:
    print

value, type = _winreg.QueryValueEx(explorer, "Logon User Name")

print
print "user is", repr(value)

'Logon User Name' 'CleanShutdown' 'ShellState' 'Shutdown Setting'