def GetKeyByPath(self, key_path):
key_path_upper = key_path.upper()<EOL>if key_path_upper.startswith(self._key_path_prefix_upper):<EOL><INDENT>relative_key_path = key_path[self._key_path_prefix_length:]<EOL><DEDENT>elif key_path.startswith(definitions.KEY_PATH_SEPARATOR):<EOL><INDENT>relative_key_path = key_path<EOL>key_path = '<STR_LIT>'.join([self._key_path_prefix, key_path])<EOL><DEDENT>else:<EOL><INDENT>return None<EOL><DEDENT>path_segments = key_paths.SplitKeyPath(relative_key_path)<EOL>registry_key = self._root_key<EOL>if not registry_key:<EOL><INDENT>return None<EOL><DEDENT>for path_segment in path_segments:<EOL><INDENT>registry_key = registry_key.GetSubkeyByName(path_segment)<EOL>if not registry_key:<EOL><INDENT>return None<EOL><DEDENT><DEDENT>return registry_key<EOL>
Retrieves the key for a specific path.

        Args:
          key_path (str): Windows Registry key path.

        Returns:
          WinRegistryKey: Windows Registry key or None if not available.