Accessing values of list by different indices

Asked Feb 24 '21 at 20:46

Active Feb 24 '21 at 20:49

Viewed 36 times

Hy, I am fairly new to python. I am stuck with problem which is below explained, We have two lists say

A = [0,3,4,6,7]   #indices
B = [1.2,5,1.3,0.5,7,0.6,0.43,5,3,6,4,1,5,7,4]   #values

where list A elements are actually indices of list B which I want to access and store in new list say C.
so my list C should be

C = [1.2,0.5,7,0.43 ,5]

And what if I have array instead of list? Thank you for your time.....

edited Feb 24 '21 at 20:49

Barmar

asked Feb 24 '21 at 20:46

Nazish Murad

Use a list comprehension that loops over `A` and returns `B[element]` – Barmar Feb 24 '21 at 20:48
Does this answer your question? [Access multiple elements of list knowing their index](https://stackoverflow.com/questions/18272160/access-multiple-elements-of-list-knowing-their-index) – Milad Yousefi Feb 24 '21 at 20:48
1

Use list comprehension: `C = [B[i] for i in A]` – Timur Shtatland Feb 24 '21 at 20:49
Also, use lower case variable names for most purposes. – Timur Shtatland Feb 24 '21 at 20:50
@Barmar thank you very much :) – Nazish Murad Feb 24 '21 at 21:01
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@Timur thank you ,I hope will learn this kind of comprehension soon :) – Nazish Murad Feb 24 '21 at 21:03

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