Python winreg - 如何将换行写入 REG_SZ 值

Question

我需要一些帮助来将换行写入注册表值。该值的类型为 REG_SZ。

我可以手动执行此操作，方法是在修改注册表中的十六进制值时向每个中断位置添加“0A”，但我不确定如何以编程方式执行此操作。

这是我当前将字符串写入注册表的代码，它可以工作，但不允许换行:

(标识信息已编辑，文本已缩短。“#”是换行位置)

import os
import _winreg
from _winreg import *

Key = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
Field = [_winreg.REG_SZ, _winreg.REG_BINARY]
Sub_Key = ["legalnoticetext",
           "legalnoticecaption"]

value = ["Terms of Use",
        "By logging in to this PC, users agree to the Terms of Use"
        "\nThe User agrees to the following:#- The User may not alter, in any way, "
        "with Settings on this PC without the approval from any Authorised Persons."]

parmLen = len(Sub_Key)
z = 0  # Loop Counter for list iteration

try:
    Key = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
    if not os.path.exists(Key):
        key = _winreg.CreateKey(HKEY_LOCAL_MACHINE, Key)
    Registrykey = OpenKey(HKEY_LOCAL_MACHINE, Key, 0, KEY_WRITE)
    while z < parmLen:
        _winreg.SetValueEx(Registrykey, Sub_Key[z], 0, Field[z], value[z])
        print ("Setting <" + Sub_Key[z] + "> with value: " + value[z])
        z += 1
    CloseKey(Registrykey)
    print ("SUCCESSFUL! Procedure: Show Logon Terms of Use")
except WindowsError:
    print ("Error")

我测试了以下代码，看看是否可以直接以十六进制写入，因为我有修改后的十六进制值，但它会导致该值被解释为字符串，然后格式化它(再次)错误地转换为十六进制。

import os
import _winreg
from _winreg import *

Key = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
Field = [_winreg.REG_SZ, _winreg.REG_BINARY]
Sub_Key = ["legalnoticetext",
           "legalnoticecaption"]

value = ["Terms of Use",

         "42,00,79,00,20,00,6C,00,6F,00,67,00,67,00,69,00,6E,00,67,00,20,00,69,00,"
         "6E,00,20,00,74,00,6F,00,20,00,74,00,68,00,69,00,73,00,20,00,50,00,43,00,"
         "2C,00,20,00,75,00,73,00,65,00,72,00,73,00,20,00,61,00,67,00,72,00,65,00,"
         "65,00,20,00,74,00,6F,00,20,00,74,00,68,00,65,00,20,00,54,00,65,00,72,00,"
         "6D,00,73,00,20,00,6F,00,66,00,20,00,55,00,73,00,65,00,0A,00,54,00,68,00,"
         "65,00,20,00,55,00,73,00,65,00,72,00,20,00,61,00,67,00,72,00,65,00,65,00,"
         "73,00,20,00,74,00,6F,00,20,00,74,00,68,00,65,00,20,00,66,00,6F,00,6C,00,"
         "6C,00,6F,00,77,00,69,00,6E,00,67,00,3A,00,0A,00,2D,00,20,00,54,00,68,00,"
         "65,00,20,00,55,00,73,00,65,00,72,00,20,00,6D,00,61,00,79,00,20,00,6E,00,"
         "6F,00,74,00,20,00,61,00,6C,00,74,00,65,00,72,00,2C,00,20,00,69,00,6E,00,"
         "20,00,61,00,6E,00,79,00,20,00,77,00,61,00,79,00,2C,00,20,00,77,00,69,00,"
         "74,00,68,00,20,00,53,00,65,00,74,00,74,00,69,00,6E,00,67,00,73,00,20,00,"
         "6F,00,6E,00,20,00,74,00,68,00,69,00,73,00,20,00,50,00,43,00,20,00,77,00,"
         "69,00,74,00,68,00,6F,00,75,00,74,00,20,00,74,00,68,00,65,00,20,00,61,00,"
         "70,00,70,00,72,00,6F,00,76,00,61,00,6C,00,20,00,66,00,72,00,6F,00,6D,00,"
         "20,00,61,00,6E,00,79,00,20,00,41,00,75,00,74,00,68,00,6F,00,72,00,69,00,"
         "73,00,65,00,64,00,20,00,50,00,65,00,72,00,73,00,6F,00,6E,00,73,00,2E,00,"
         "00,00"]

parmLen = len(Sub_Key)
z = 0  # Loop Counter for list iteration

try:
    Key = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
    if not os.path.exists(Key):
        key = _winreg.CreateKey(HKEY_LOCAL_MACHINE, Key)
    Registrykey = OpenKey(HKEY_LOCAL_MACHINE, Key, 0, KEY_WRITE)
    while z < parmLen:
        _winreg.SetValueEx(Registrykey, Sub_Key[z], 0, Field[z], value[z])
        print ("Setting <" + Sub_Key[z] + "> with value: " + value[z])
        z += 1
    CloseKey(Registrykey)
    print ("SUCCESSFUL! Procedure: Show Logon Terms of Use")
except WindowsError:
    print ("Error")

RTFM 并没有被证明对解决这个特定问题有很大帮助，因此我们将不胜感激!

Answer 1

您遇到了几个问题。 os.path.exists 检查文件路径是否存在。向其提供 key 字符串不会检查注册表。

您似乎使用的是 Python 2.7，请考虑升级到 3。您遇到的问题是编写 REG_BINARY 需要二进制数据；在 Python 3 中，这意味着您只需对字符串进行编码即可。这是 Python 3 中的代码。

import winreg

Key_str = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
Field = [winreg.REG_SZ, winreg.REG_BINARY]
Sub_Key = ["legalnoticetext", "legalnoticecaption"]

value = ["Terms of Use",
        "By logging in to this PC, users agree to the Terms of Use"
        "\nThe User agrees to the following:#- The User may not alter, in any way, "
        "with Settings on this PC without the approval from any Authorised Persons."]

try:
    key = winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, Key_str)
except FileNotFoundError:
    key = winreg.CreateKey(winreg.HKEY_LOCAL_MACHINE, Key_str)

for sk, f, v in zip(Sub_Key, Field, value):
    if f == winreg.REG_BINARY:
        winreg.SetValueEx(key, sk, 0, f, v.encode('latin-1'))
    else:
        winreg.SetValueEx(key, sk, 0, f, v)
key.Close()

在 Python 2 中，标准字符串是字节字符串，因此无需将字符串编码为字节编码。这是 Python 2 代码:

import _winreg

Key_str = r"SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System"
Field = [_winreg.REG_SZ, _winreg.REG_BINARY]
Sub_Key = ["legalnoticetext", "legalnoticecaption"]

value = ["Terms of Use",
        "By logging in to this PC, users agree to the Terms of Use"
        "\nThe User agrees to the following:#- The User may not alter, in any way, "
        "with Settings on this PC without the approval from any Authorised Persons."]

try:
    key = _winreg.OpenKey(_winreg.HKEY_LOCAL_MACHINE, Key_str)
except WindowsError:
    key = _winreg.CreateKey(_winreg.HKEY_LOCAL_MACHINE, Key_str)

for sk, f, v in zip(Sub_Key, Field, value):
    _winreg.SetValueEx(key, sk, 0, f, v)
key.Close()