def p_Cells(self, p):
        """Cells : Cells ',' Cell
                 | Cell"""
        n = len(p)
        if n == 4:
            p[0] = ('Cells', p[1][1] + [p[3]])
        elif n == 2:
            p[0] = ('Cells', [p[1]])
def p_Cells(self, p):
        """Cells : Cells ',' Cell
                 | Cell"""
        n = len(p)
        if n == 4:
            p[0] = ('Cells', p[1][1] + [p[3]])
        elif n == 2:
            p[0] = ('Cells', [p[1]])
def p_Cells ( self , p ) : n = len ( p ) if n == 4 : p [ 0 ] = ( 'Cells' , p [ 1 ] [ 1 ] + [ p [ 3 ] ] ) elif n == 2 : p [ 0 ] = ( 'Cells' , [ p [ 1 ] ] )
Cells : Cells ',' Cell
                 | Cell
Cells : Cells Cell | Cell