Find all index of list containing a value Python

2018-06-07 21:20:08

This question already has an answer here:

Accessing the index in 'for' loops? 17 answers

You might use something like

ind = [[i for i, value in enumerate(lst) if value == x] for x in lst2]

I don't know a purpose of this operation, but it might be more useful to use dict comprehension:

ind = {x: [i for i, value in enumerate(lst) if value == x] for x in lst2}

because in this case you will have output like that: {1: [0, 5, 7], 2: [1, 6, 8], 3: [2, 9]} , which might be easier to use.

这就是你所要求的：

ind = [i for i, x in enumerate(lst) for y in lst2 if x == y]

链接地址: http://www.djcxy.com/p/24018.html