#NEWLINE# def Follow( self , query ) : #NEWLINE# #INDENT# if ( ( not isinstance ( query , _Morphism ) ) and ( type ( query ) is not str ) ) : #NEWLINE# #INDENT# raise Exception ( 'Invalid parameter in follow query' ) #NEWLINE# #UNINDENT# self . _put ( 'Follow(%s)' , query ) #NEWLINE# return query