class NotFoundError(Exception): pass class AlreadyExistingError(Exception): pass class DurationError(Exception): pass class InfoNotRetrievedError(Exception): pass class FileNotDownloadedError(Exception): pass class AlreadyDownloadedError(Exception): pass class InvalidConfigError(Exception): pass class VideoHasNoName(Exception): pass class VideoInfoExtractionFailed(Exception): pass class VideoIsPlaylist(Exception): pass class VideoInfoUnknown(Exception): pass class VideoIsNotReady(Exception): pass class PrivateError(Exception): pass class PastDateError(Exception): pass class MissingAPIKeyError(Exception): pass