2021-01-28列表练习题
2021-01-29 本文已影响0人
testerPM
1.把a和b的值一起组合打印出来
a=[1,2,3,"this is a list"]
b=[4,5,6,"这是2个列表"]
a=[1,2,3,"this is a list"]
b=[4,5,6,"这是2个列表"]
print(a+b)
2.输出列表a两次
a=[1,2,3,"this is a list"]
print(a*2)
- 取列表中的第一个值
a=[1,2,3,"this is a list"]
print(a[0])
4.取列表中第二个和第三个值
a=[1,2,3,"this is a list"]
print(a[1:3])#切片：1.取上不取下 2.索引从0开始 3.右边数从-1开始
5.取第三个值以及到末尾的所有值
a=[1,2,3,"this is a list"]
print(a[2:])
6：L=[
['apple','goole','microsoft'],
['java','python','ruby','php'],
['adam','bart','lisa']
]
打印apple,python,lisa
L=[
['apple','goole','microsoft'],
['java','python','ruby','php'],
['adam','bart','lisa']
]
print(L[0][0])
print(L[1][1])
print(L[2][2])
