<s> from . container import Container , Well , WellGroup <EOL> from . protocol import Protocol <EOL> from . container_type import ContainerType <EOL> from . unit import Unit <EOL> class UserError ( Exception ) : <EOL> '''<STR_LIT>''' <EOL> def __init__ ( self , message , info = None ) : <EOL> super ( Exception , self ) . __init__ ( message ) <EOL> self . info = info </s>
