[英]Populating a 2D list
I'm trying to enter a 100 number square into a 2D list https://i.stack.imgur.com/eSFiO.png with each list containing 10 numbers 1-10,11-20,21-30 and so on.我正在尝试将 100 个数字方块输入 2D 列表https://i.stack.imgur.com/eSFiO.png ,每个列表包含 10 个数字 1-10,11-20,21-30 等等。 This is my code so far but when I run it in my editor it just keeps running and eventually crashes without printing anything.
到目前为止,这是我的代码,但是当我在编辑器中运行它时,它只会继续运行并最终崩溃而没有打印任何内容。 Please explain to me what I am doing wrong.
请向我解释我做错了什么。 Thanks
谢谢
number_square=[[],[],[],[],[],[],[],[],[],[]]
number_list=[1,2,3,4,5,6,7,8,9,10]
for row in number_square:
for number in number_list:
number_square.append(number)
number_list.remove(number)
number_list.append(number+10)
print(number_square)
There are many changes required in your code.您的代码需要进行许多更改。 Good effort from your side on trying the code.
您在尝试代码方面付出了很大的努力。 I have modified the code and probably you can get the logic from it.
我已经修改了代码,您可能可以从中获取逻辑。
number_square=[[],[],[],[],[],[],[],[],[],[]]
number_list=[10,20,30,40,50,60,70,80,90,100]
for i in range(0,len(number_square)):
for j in range(number_list[i]-9,number_list[i]+1):
number_square[i].append(j)
Problems:问题:
number_list
while iterating over itnumber_list
中删除number_square
instead of row
number_square
而不是row
If I were you, I'd use a list comprehension with range
s instead:如果我是你,我会使用带有
range
的列表推导:
number_square = [list(range(i, i+10)) for i in range(1, 101, 10)]
Due credit to Onyambu for suggesting something similar in a comment由于Onyambu在评论中提出了类似的建议
That's because you aren't accessing the content of neither row
nor number
in the for
loops.那是因为您没有访问
for
循环row
和number
的内容。 Here is a suggestion:这是一个建议:
number_square=[[],[],[],[],[],[],[],[],[],[]]
number_list=[1,2,3,4,5,6,7,8,9,10]
i = 0
for row in number_square:
for i in range(len(number_list)):
row.append(number_list[i])
number_list[i] += 10
print(number_square)
Note that the first loop is equivalent to for each
.请注意,第一个循环等效于
for each
。 In this syntax, you can't alter the value of the item in a list.在此语法中,您不能更改列表中项目的值。 In the second loop, I put a "traditional"
for
loop with range
to alter the values in number_list
.在第二个循环中,我放置了一个带有
range
的“传统” for
循环来更改number_list
中的值。
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