def future_import2(feature, node):
    """
    An alternative to future_import() which might not work ...
    """
    root = find_root(node)

    if does_tree_import(u"__future__", feature, node):
        return

    insert_pos = 0
    for idx, node in enumerate(root.children):
        if node.type == syms.simple_stmt and node.children and \
           node.children[0].type == token.STRING:
            insert_pos = idx + 1
            break

    for thing_after in root.children[insert_pos:]:
        if thing_after.type == token.NEWLINE:
            insert_pos += 1
            continue

        prefix = thing_after.prefix
        thing_after.prefix = u""
        break
    else:
        prefix = u""

    import_ = FromImport(u"__future__", [Leaf(token.NAME, feature, prefix=u" ")])

    children = [import_, Newline()]
    root.insert_child(insert_pos, Node(syms.simple_stmt, children, prefix=prefix))
An alternative to future_import() which might not work ...