Asked By – Bruce
index() will give the first occurrence of an item in a list. Is there a neat trick which returns all indices in a list for an element?
Now we will see solution for issue: How to find all occurrences of an element in a list
You can use a list comprehension with
indices = [i for i, x in enumerate(my_list) if x == "whatever"]
enumerate(my_list) yields pairs
(index, item) for each item in the list. Using
i, x as loop variable target unpacks these pairs into the index
i and the list item
x. We filter down to all
x that match our criterion, and select the indices
i of these elements.