def remove_duplicates(lst):
    """remove_duplicates([2,2,2,1,3,3]) => [3,1,2]

    Returns a copy of a list without duplicates. Every list
    item must be hashable and the order of the items in the
    resulting list is not defined.
    """
    u = {}
    for x in lst:
        u[x] = 1

    return u.keys()
remove_duplicates([2,2,2,1,3,3]) => [3,1,2]

    Returns a copy of a list without duplicates. Every list
    item must be hashable and the order of the items in the
    resulting list is not defined.
    
debugger/src/_pydev_imps/_pydev_SimpleXMLRPCServer.py