You have a minor bug -- when len(lst) is a multiple of batch_size, this will have an extra iteration at the end with an empty batch. The fixed version is `range((len(lst) + batch_size - 1) // batch_size)`, which emulates `ceil(len(lst) / batch_size)`. Yet more proof that this should be part of stdlib :)

Personally I think I'd actually write it like this:

    for i in range(0, len(lst), batch_size):
        batch = lst[i:i+batch_size]

The docs give another pretty nice implementation using iter() and islice() in a loop (but it uses the walrus operator `:=` so it requires Python 3.8+ as written).

Blatant reason why a native solution was long overdue.