day9(字典练习题)

dic = {
    ‘k1‘:‘v1‘,
    ‘k2‘:‘v2‘,
    ‘k3‘:‘v3‘
}
#1
for key in dic.keys():
    print(key)
#2
for key in dic.values():
    print(key)
#3
for key in dic:
    print(key,dic[key])
#4
dic[‘k4‘] = ‘v4‘
print(dic)

#5
dic.pop("k1")
print(dic)

#6
print (dic.get(‘k5‘)) #先获取该值如不为空则可删除

#7
print(dic.get(‘k2‘))

#8
print(dic.get(‘k6‘))
#9
dic2 = {
    ‘k1‘:‘v111‘,
    ‘a‘:‘b‘
}
dic2.update(dic)
print(dic2)

#10
lis =[[‘k‘,[‘qwe‘,20,{‘k1‘:[‘tt‘,3,‘1‘]},89],‘ab‘]]
#lis[0][1][2][‘k1‘][0] = ‘TT‘ #1
#print(lis)
lis[0][1][2][‘k1‘][0] = lis[0][1][2][‘k1‘][0].upper() #2
print(lis)