In Python, how do I find the index of an item given a list containing it?

>>> ["foo","bar","baz"].index('bar')

>>> help(["foo", "bar", "baz"])
Help on list object:

class list(object)
 ...

 |
 |  index(...)
 |      L.index(value, [start, [stop]]) -> integer -- return first index of value
 |

def all_indices(value, qlist):
    indices = []
    idx = -1
    while 1:
        try:
            idx = qlist.index(value, idx+1)
            indices.append(idx)
        except ValueError:
            break
    return indices

all_indices("foo", ["foo","bar","baz","foo"])