winreg (Windows Registry API) provides functions to expose the Windows Registry API to Python. We use this module to expose a low-level interface to the registry.
The method DeleteKeyEx removes any specified key. The method takes key, sub_key, access, and reserved as parameters.
Using this method removes all keys and their values. Otherwise, the method raises an OSError exception.
winreg.DeleteKeyEx(key, sub_key, access=KEY_WOW64_64KEY, reserved=0)
key: Any open HKEY_* constant or one of the predefined HKEY_* constants can be given as a parameter to the method.
sub_key: The subkey of any given key. It is a string value. This parameter cannot have a value of None.
reserved: A reserved integer that contains the value 0.
access: An integer value that defines any security access for the desired key. We refer to this as an access mask with a default value of KEY_WOW64_64KEY. However, it can contain other values as well.
Using this method, a user cannot delete a specified key if that key itself has subkeys.
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