raw_dict={'domain_id': '$domain_id', 'enabled': '$enabled', 'name': '$username'}
?
key_list = list(filter(lambda k: raw_dict.get(k) == "$domain_id", raw_dict.keys()))
print(key_list) # ['enabled', 'name']

newdict = dict(zip(raw_dict.values(),raw_dict.keys())) #字典的反轉，但是如果兩個key的value一樣，反轉后，只會保留一個key
print(newdict)

? ? def removeParm(self,srcInterParm,parms):
? ? ? ? #去除無用的parm
? ? ? ? pattern = re.compile(r'\$(.*?)\'')
? ? ? ? parmlist =re.findall(pattern,str(srcInterParm))#獲取到所有$parm變量名
? ? ? ? noexistParm = []
? ? ? ? for value in parmlist:#驗證parm是否在傳參中包含
? ? ? ? ? ? if not parms.keys().__contains__(value):
? ? ? ? ? ? ? ? noexistParm.extend(list(filter(lambda k: srcInterParm.get(k) == '$'+value, srcInterParm.keys())))
? ? ? ? for key in noexistParm:
? ? ? ? ? ? srcInterParm.pop(key)
? ? ? ? return srcInterParm
?
? ? print(t.removeParm({'domain_id': '$domain_id', 'enabled': '$enabled', 'name': '$username'},{}))
#打印結果為{}

d = {"1": 9, "2": 0, "3": 7, "6": 3, "0": 4, "4": 1}
value_1 = max(d, key=d.get)
print(value_1)
value_2 = max(d,key=lambda x:d[x])
print(value_2)

value_3 =sorted(d,key=lambda x:d[x])[-1]
print(value_3)