<s> from __future__ import print_function <EOL> from __future__ import unicode_literals <EOL> class ParameterValidationError ( Exception ) : <EOL> pass <EOL> class APIError ( Exception ) : <EOL> pass <EOL> class AuthError ( APIError ) : <EOL> pass <EOL> class ForbiddenError ( APIError ) : <EOL> pass <EOL> class AlreadyExistsError ( APIError ) : <EOL> pass <EOL> class NotFoundError ( APIError ) : <EOL> pass <EOL> class Error ( Exception ) : <EOL> pass <EOL> class InterfaceError ( Error ) : <EOL> pass <EOL> class DatabaseError ( Error ) : <EOL> pass <EOL> class DataError ( DatabaseError ) : <EOL> pass <EOL> class OperationalError ( DatabaseError ) : <EOL> pass <EOL> class IntegrityError ( DatabaseError ) : <EOL> pass <EOL> class InternalError ( DatabaseError ) : <EOL> pass <EOL> class ProgrammingError ( DatabaseError ) : <EOL> pass <EOL> class NotSupportedError ( DatabaseError ) : <EOL> pass </s>
