Find indexes of repeated elements in an array (Python, NumPy)

Question

Assume, I have a NumPy-array of integers, as:

[34,2,3,22,22,22,22,22,22,18,90,5,-55,-19,22,6,6,6,6,6,6,6,6,23,53,1,5,-42,82]

I want to find

Answer 1

There really isn't a great short-cut for this. You can do something like:

mult = 5
for elem in val_list:
    target = [elem] * mult
    found_at = val_list.index(target)

I leave the not-found exceptions and longer sequence detection to you.