Indentifying the LAST occurrence of an item in a list

[bearophileHUGS at lycos.com]

Terry Reedy:
> def rindex(lis, item):
>     for i in range(len(lis)-1, -1, -1):
>         if item == lis[i]:
>             return i
>     else:
>         raise ValueError("rindex(lis, item): item not in lis")

This is an alternative, I don't know if it's faster:

def rindex(seq, item):
    for pos, el in enumerate(reversed(seq)):
        if item == el:
            return len(seq) - 1 - pos
    else:
        raise ValueError("rindex(lis, item): item not in lis")

t = [0, 1, 2, 3, 0]
print rindex(t, 0)
print rindex(t, 3)
print rindex(t, 1)

Bye,
bearophile