<s> class CommandError ( Exception ) : <EOL> def __init__ ( self , msg ) : <EOL> self . msg = msg <EOL> class SilentError ( Exception ) : <EOL> pass <EOL> class ReplayError ( Exception ) : <EOL> pass <EOL> class WrongVerfkeyError ( Exception ) : <EOL> pass <EOL> class BadSignatureError ( Exception ) : <EOL> pass <EOL> class UnknownChannelError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class ContactNotReadyError ( Exception ) : <EOL> pass </s>
