python dict 如何按照 多个value 值排序

#已知列表字典 lb=[{"key":9},{"key":5},{"key":-1}] 按照 value排序呢
lb=[{"key":9},{"key":5},{"key":-1},{"key":-6},{"key":-7},{"key":90}]

sortlb=[]
keylb=[]
dict={}
i=0

while i

# 多个字段的比较

 from operator import itemgetter
v=[{'title':'a','id':1},{'title':'b','id':3},{'title':'c','id':2},{'title':'d','id':2}]

 a = sorted(v,key=itemgetter("id","title"))