winreg.DeleteKeyEx(key, sub_key, access=KEY_WOW64_64KEY, reserved=0) Deletes the specified key. Note The DeleteKeyEx() function is implemented with the RegDeleteKeyEx Windows API function, which is specific to 64-bit versions of Windows. See the RegDeleteKeyEx documentation. key is an already open key, or one of the predefined HKEY_* constants. sub_key is a string that must be a subkey of the key identified by the key parameter. This value must not be None, and the key may not have subkeys

winreg.DeleteKey(key, sub_key) Deletes the specified key. key is an already open key, or one of the predefined HKEY_* constants. sub_key is a string that must be a subkey of the key identified by the key parameter. This value must not be None, and the key may not have subkeys. This method can not delete keys with subkeys. If the method succeeds, the entire key, including all of its values, is removed. If the method fails, an OSError exception is raised. Changed in version 3.3: See above.

winreg.CreateKeyEx(key, sub_key, reserved=0, access=KEY_WRITE) Creates or opens the specified key, returning a handle object. key is an already open key, or one of the predefined HKEY_* constants. sub_key is a string that names the key this method opens or creates. reserved is a reserved integer, and must be zero. The default is zero. access is an integer that specifies an access mask that describes the desired security access for the key. Default is KEY_WRITE. See Access Rights for other al

winreg.CreateKey(key, sub_key) Creates or opens the specified key, returning a handle object. key is an already open key, or one of the predefined HKEY_* constants. sub_key is a string that names the key this method opens or creates. If key is one of the predefined keys, sub_key may be None. In that case, the handle returned is the same key handle passed in to the function. If the key already exists, this function opens the existing key. The return value is the handle of the opened key. If t

winreg.ConnectRegistry(computer_name, key) Establishes a connection to a predefined registry handle on another computer, and returns a handle object. computer_name is the name of the remote computer, of the form r"\\computername". If None, the local computer is used. key is the predefined handle to connect to. The return value is the handle of the opened key. If the function fails, an OSError exception is raised. Changed in version 3.3: See above.

winreg.CloseKey(hkey) Closes a previously opened registry key. The hkey argument specifies a previously opened key. Note If hkey is not closed using this method (or via hkey.Close()), it is closed when the hkey object is destroyed by Python.

exception WindowsError Only available on Windows.

webbrowser.register(name, constructor, instance=None) Register the browser type name. Once a browser type is registered, the get() function can return a controller for that browser type. If instance is not provided, or is None, constructor will be called without parameters to create an instance when needed. If instance is provided, constructor will never be called, and may be None. This entry point is only useful if you plan to either set the BROWSER variable or call get() with a nonempty ar

webbrowser.open_new_tab(url) Open url in a new page (“tab”) of the default browser, if possible, otherwise equivalent to open_new().

webbrowser.open_new(url) Open url in a new window of the default browser, if possible, otherwise, open url in the only browser window.