Python annoyances

Stuff that annoys me in Python:

• There is no way to reference all the arguments passed into a function. Sometimes I want to iterate over them but the only way to do that is if I collect them in a *args or **keywords which destroys the signature.
• dict.setdefault() — never can remember what this does, just that it's not what i think it is
• str.join(sequence) — i always expect the elements in sequence to get stringified