如果Windows注册表项已经存在，请签入Python

Question

得到以下代码：

    aReg = ConnectRegistry(None,HKEY_CURRENT_USER)
aKey = OpenKey(aReg, r"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", 0, KEY_WRITE)
try:   
   SetValueEx(aKey,registry_key_name,0, REG_SZ, r"" + folder + "\" + file_name) 
except EnvironmentError:                                          
    print "Encountered problems writing into the Registry..."
CloseKey(aKey)
CloseKey(aReg)

如果已经没有这样的键，我就不想再加了

Answer 1

根据this问题，我想最好的选择是使用^{}并优雅地处理WindowsError异常，假设注册表项不存在。在

from _winreg import *
exists = True
aReg = ConnectRegistry(None,HKEY_CURRENT_USER)
try:
    aKey = OpenKey(aReg, r"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", 0, KEY_WRITE)
except WindowsError:
    exists = False

try:
    if not exists:
        SetValueEx(aKey,registry_key_name,0, REG_SZ, r"" + folder + "\" + file_name) 
except EnvironmentError:                                          
    print "Encountered problems writing into the Registry..."

CloseKey(aKey)
CloseKey(aReg)