Append is a function that adds it to the end of the list. (I think my code is working Python, but I haven't actually run it).
Btw: I'd venture to guess that you're not a Python person, and that's why it's not obvious that it constructs the method in the same order. In imperative languages (where Python isn't the perfect example b/c it has filter and list comprehensions), you get so used to these loops that you don't have to worry about questions like that.
If you wanted a reversed list, you'd either name your function appropriately, or call reverse after you run the filter method. It's a little painful to do the first bit.
Maybe that's right, maybe that's wrong, but it's indeterminate from the code whether it's desired, whereas a filter function and a reverse function would make it explicit.