借由字典的匹配学习类中方法的调用

现在有两个字典，想要根据id匹配。但这不是目的，我想尝试的是类中方法的自调用和局部，全局变量的用法。

#coding : utf-8
class MatchCase(object):
    def __init__(self, case_1, case_2): # 定义类的属性参数
        self.case_1 = case_1
        self.case_2 = case_2
    def getcaseid(self, case): # 这个方法是获取id的一种方法，注意前面一定要加self，再加局部变量
        keys = tuple(case.keys())
        dic = {}
        for i in range(len(keys)):
            dic[i] = case[keys[i]]['caseid']
        id = list(dic.values())
        return id


    def match(self):
        caseid_1 = self.getcaseid(self.case_1) # 引用类中方法要加self，和变量一样
        caseid_2 = self.getcaseid(self.case_2)
        return list(set(caseid_1) ^ set(caseid_2))

from match import MatchCase

a1 = {"case1": {"caseid": 12, "keyname": "case1", "caseresult": True}, "case2": {"caseid": 13, "keyname": "case1", "caseresult": True}}
a2 = {"case1": {"caseid": 12, "keyname": "case_1", "caseresult": True}, "case2": {"caseid": 13, "keyname": "case_2", "caseresult": True}, "case3": {"caseid": 3, "keyname": "case_3", "caseresult": False}, "case4": {"caseid": 111, "keyname": "case_1", "caseresult": False},  "case5": {"caseid": 19, "keyname": "case_5", "caseresult": False}}

z = MatchCase(a1,a2)
print(z.match())