How to access a specific element of an Array by using strings?

Propably there already is an answer to my question, but I don't know how to search for my problem.

Let me explain:

Let's suggest I have the Array A = [9, 7, 5, 1, 3, 8, 2, 6, 4]

and I have a string called str1. This string is changing in a loop. Lets suggest in first step str1 = "id1", in second step str1 = "id2" and in last step str1 = "id3". Each of these id's is an variable, for example id1=3, id2=6, id3=4.

Is there any opportunity to access on an specific element of my Array A by using my string?

For example something like A("str1") or A('str1'), which should be in my first loop step A(id1)=A(3)=5, in my second loop step A(id2)=A(6)=8 and in the last step A(id3)=A(4)=1. None of the opportunities I tried worked for me, there are different error types, for example

"Index exceeds the number of array elements (6)." for A('str1)

or

"Unable to use a value of type string as an index." for A("str1").

It has to be an element-access by a string, because I laod my data from different files all into one script.

Answer 1

[Johannes Moor]

I already found a solution by myself. If someone's interested:

A(eval(str1)) does the right thing.