第025讲：列表（VII）

Wynn_0303 · 发表于 2023-1-27 21:09:03

打卡

155185 · 发表于 2023-1-31 17:18:22

we = [1,2,3,333,45,884,4,6,484,]
weo = [i for i in we if i[0] == '4']
报错

chenbocauc · 发表于 2023-2-1 23:12:59

Luce · 发表于 2023-2-2 14:23:20

复习打卡完成

jspinger1987 · 发表于 2023-2-17 17:30:59

打卡

littlewhale · 发表于 2023-2-28 16:07:14

打卡~~~

YaphetS-Python · 发表于 2023-3-2 22:37:24

列表推导式if嵌套，简洁胜于复杂。

Mever · 发表于 2023-4-7 00:59:06

flatten = [col for row in matrix for col in row]
这句就没看懂，哭了，能再解释一下吗

来自成都的momo · 发表于 2023-4-8 00:07:30

课后题虐我千百遍，我待python如初恋

harrydeng · 发表于 2023-4-25 23:42:51

justsingmysong · 发表于 2023-6-4 22:06:06

1024

暴躁小熊猫 · 发表于 2023-6-6 23:39:25

>>> S = ["Sun", "Suny", "Today", "Funny", "Happy", "Fantastic"]
>>> even = [i for i in S if i[0] == 'S']
>>> even
['Sun', 'Suny']
这样是筛选"S"开头的，如果我还要筛选"F"开头的，实现['Sun', 'Suny', "Funny", "Fantastic"]应该怎么写？请指教，谢谢！

137430724 · 发表于 2023-10-23 16:26:51

155185 发表于 2023-1-31 17:18
we = [1,2,3,333,45,884,4,6,484,]
weo = == '4']
报错

we=['1', '2', '3', '333', '45', '884', '4', '6', '484']
应该是字符串

137430724 · 发表于 2023-10-23 16:30:23

暴躁小熊猫发表于 2023-6-6 23:39
>>> S = ["Sun", "Suny", "Today", "Funny", "Happy", "Fantastic"]
>>> even = == 'S']
>>> even

even = [i for i in S if i[0] == 'S'or i[0] == 'F' ]

JTYBLCC · 发表于 2024-7-18 17:51:51

学完打卡

zengjun2 · 发表于 2024-8-22 14:33:10

打卡

jingzhe · 发表于 2024-8-30 14:48:42

为什么这个就分开了呢
>>> A = [0] * 3
>>> for i in range(3):
... A[i] = [0] * 3
...
>>> A
[[0, 0, 0], [0, 0, 0], [0, 0, 0]]
>>> A[1][1] = 1
>>> A
[[0, 0, 0], [0, 1, 0], [0, 0, 0]]

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[知识点备忘] 第025讲：列表（VII）