They've gone with:
for (foo, bar) in baz
meaning baz is a dictionary, foo the key and bar the value.
I guess that's because they don't have lists of tuples and so baz couldn't be a list of tuples (like the above would be interpreted in Python)
EDIT: I think they do have lists of tuples so I guess they just don't have Python's tuple unpacking.
EDIT 2: Oh wait, they do have tuple unpacking. So how does the above work? Maybe it works one way with dictionaries and another way with lists?