How to index over specific column in list of arrays?

Question

I have

list1 = [[50,0.43],[45,0.66]]

And I want to get all the second elements in each array so I would like:

[0.43,0.66]

Also, if I want to check if 50 is in list1, how do I do that? Because using

50 in list1

returns False.

If you do a lot of this, you will really want to use numpy instead — Azsgy, Apr 20 '18 at 20:25
`any(50 in i for i in list1)` for your second issue, `[i[1] for i in list1]` for your first — user3483203, Apr 20 '18 at 20:25

score -1 · Accepted Answer · answered Apr 20 '18 at 21:10

-1

1.

for i in list1[1]:
    print(i)

2.

50 in list1[0]

Remember there are 2 list in list1. Which means they are list of list.

answered Apr 20 '18 at 21:10

Panduka Nandara

Neither of these do what the OP wants – Azsgy Apr 20 '18 at 21:13
I answered his question. – Panduka Nandara Apr 20 '18 at 21:14
no. The first one prints the first row, and the second one returns if 50 is in the first row – Azsgy Apr 20 '18 at 21:16
No no I think that you were getting wrong and also he may be in baby step in programming. – Panduka Nandara Apr 20 '18 at 21:24

1 Answers1