lconst_case_list : lconst COLON expr
                            | lconst COLON OTHERWISE
                            | lconst_case_list COMMA lconst COLON expr

def p_lconst_case_list(self, p):
        '''lconst_case_list : lconst COLON expr
                            | lconst COLON OTHERWISE
                            | lconst_case_list COMMA lconst COLON expr'''
        if len(p) == 4:
            p[0] = [('lconst', (p[1], p[3]))]
        elif len(p) == 6:
            p[1].append(('lconst', (p[3], p[5])))
            p[0] = p[1]