#NEWLINE# def _str_subex( self , subex ) : #NEWLINE# #INDENT# s = ( '%s' % s ) #NEWLINE# if ( isinstance ( subex , DrtConcatenation ) and ( subex . consequent is None ) ) : #NEWLINE# #INDENT# return s [ 1 : ( - 1 ) ] #NEWLINE# #UNINDENT# return s