4.删除
5.keys.values.items
print(dict1.keys()) print(dict1.values()) print(dict1.items())
6.循环
for key in dict1: print(key)
7.update()
print(dict1) dict2={‘work':'student'} #dict2加入dict1字典中 dict1.update(dict2) print(dict1)
元组类型(在小括号内,以逗号隔开存放多个值)
tuple1=(1,2,3) print(tuple1)
1.按照索引值
print(tuple1[2])
2.切片,顾头不顾尾
print(tuple1[0:6]) print(tuple1[0:6:2])
3.长度
print(len(tuple1))
4.成员运算 in 和 not in
print(1 in tuple1) print(1 not in tuple1)
5.循环
for line in tuple1: print(line)
集合类型
在{ }内,以逗号隔开,可存放多个值,但集合默认去重功能
set1={1,2,3,4,1,2,3,4} print(set1)
集合是无序的
set1=set() set2={} print(set1) print(set2) set2['name']='tank' print(type(set2))