如何为此列表创建步骤？ [英] How do I make the step for this list?

问题描述

 geom_prog = list（范围（1，n + 1，什么？））

我是如果比率= 2且n = 8，那么该列表将是[1,2,4,8]



所以我不得不放在哪里我把'什么？'一步等于

（列表中的前一个数字）*比率???

解决方案

< blockquote>你需要类似的东西：

 geom_prog = [x   x  in 范围（ 1 ， 9 ） if （x％ 2  ==  0 ）| （x ==  1 ）] 

虽然在1之后得到所有偶数，但是你需要修改表达式只获得2的幂。

geom_prog = list(range(1, n+1, what?))

I am trying to make is so that if ratio = 2 and n = 8, then the list would be [1,2,4,8]

So somehow I have to put where I put 'what?' a step that is equal to the
(previous number in the list)*ratio???

解决方案

You need something like:

geom_prog = [x for x in range(1, 9) if (x % 2 == 0) | (x == 1)]

Although that gets all even numbers after 1, so you need to modify the expression to get only powers of 2.

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