下列数据中,属于列表的是?
[18,"python",1.5,-0.6]
"[18,"python",1.5,-0.6]"
(18,"python",1.5,-0.6)
([18,"python",1.5,-0.6])
定义 a = [1,2,3,4,5,6,7,8,9,10],以下能正确输出最后一个元素的是?
print(a(10))
print(a(9))
print(a[10])
print(a[9])
a = ["apple","banana","cherry"],则 print(a[-1]) 的值为?
banana
apple
程序错误
cherry
代码 s = "abcdefghijklmn",print(s[1:10:3]) 的输出结果是?
behk
adg
beh
adgj
以下代码输出结果是? s = ["seashell","gold","pink","red","purple","tomato"] print(s[1:4:2])
["gold","pink"]
["gold","pink","red","purple","tomato"]
["gold","red"]
["gold","pink","red"]
代码 DictColor = ['海贝色','金色','粉红色','棕色','紫色','西红柿色'],print(DictColor[-2:]) 的输出结果是?
['紫色','棕色']
['紫色','西红柿色']
['粉红色','棕色','紫色']
['棕色','紫色']
以下代码输出结果是? ls = ['2021','123','Python'] ls.append('2022') print(ls)
['2021','123','Python',2022]
['2021','123','Python','2022']
['2021','2021','123','Python']
['2021','2022','123','Python']
用列表 score = [80,78,92,96,100,88,95] 表示七周英文测验分数,删除第二周分数的操作是?
score[2]
score.pop(2)
score.pop(1)
score[1]
已知 Lista = list("five"),执行 Lista[2:] = list("rst") 后,列表元素为?
['f','r','s','t']
['f','i','v','e','r','s','t']
['f','i','r','s','t']
['f','i','r','s']
执行代码后,运行结果是? seq = ['HI','GOOD','boy'] seq[0] = seq[0].lower() print(seq)
["HI","good","boy"]
["hi","good","boy"]
["HI","GOOD","BOY"]
["hi","GOOD","boy"]
已知布尔型变量 x=True,y=False,z=False,结果为真的逻辑表达式是?
(x and y) or z
(x and y) and z
x or y or z
(x or y) and z
print(F or F or T) 的结果是?
True
False
1
2
输出结果为 False 的选项是?
5 == 5
5 != 6
5 is not 5
5 is 5