Removing Windows registry value using Python

Question

I would like to remove values ​​from the registry in Windows using Python, but I don't understand what sub_key is in the python documentation:

I have the following code that I would like to use:

def del_env(name): key = OpenKey(HKEY_CURRENT_USER, 'Environment', 0, KEY_ALL_ACCESS) #SetValueEx(key, name, 0, REG_EXPAND_SZ, value) DeleteKey(key, ???) # what goes where the ??? are CloseKey(key) SendMessage( win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment') 

This function should be used as

 del_env("SOMEKEY") 

ps I forgot to mention if I use:

 deleteKey(key,"") 

All environment variables in the session are erased ...

Thanks in advance, Oz

My glorious failure:

 : C:\etc\venus\current\bin>python.bat Python 2.4.4 (#0, Jun 5 2008, 09:22:45) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import _winreg >>> key = _winreg.OpenKey(_winreg.HKEY_CURRENT_USER,r"Environment") >>> _winreg.DeleteKey(key,"OZ") Traceback (most recent call last): File "<stdin>", line 1, in ? WindowsError: [Errno 2] Das System kann die angegebene Datei nicht finden 

Answer 1

Use DeleteValue instead of DeleteKey as @Philipp mentioned in the comments:

 def del_env(name): key = OpenKey(HKEY_CURRENT_USER, 'Environment', 0, KEY_ALL_ACCESS) DeleteValue(key, name) CloseKey(key) SendMessage( win32con.HWND_BROADCAST, win32con.WM_SETTINGCHANGE, 0, 'Environment') 

Answer 2

I think DeleteKey takes the parent to the key that you want to delete, and sub_key is the key that you delete ant. I am not on a Windows computer, so I cannot check it right now.

Answer 3

OK,

Not a Pythonic Solution, but it works:

  C:\Documents and Settings\admin>reg add "%REGISTRY_KEY%\Environment" /v AME /t REG_EXPAND_SZ /d "%AME%" /f #REG DELETE KeyName [/v ValueName | /ve | /va] [/f] C:\Documents and Settings\admin>reg delete "%REGISTRY_KEY%\Environment" /v AME /f Der Vorgang wurde erfolgreich ausgeführt. 

Success...