[Python-ideas] Updating PEP 315: do-while loops

[Bruce Leban]

I think a legitimate issue here is that break and continue can be hard to
see sometimes when they're nested several layers deep. That makes while
True: ... if x: break less clear than it could be. So let me throw out two
straw proposals:

(1) Allow break and continue to be spelled BREAK and CONTINUE which makes
them stand out a bit more.

    while True:
        floob
        yuzz
        if wum:
            BREAK
        thnad

(2) Allow a line containing break or continue to start with a -> token
outside the normal indentation.

    while True:
        floob
        yuzz
        if wum:
    ->      break
        thnad

I don't expect either of these proposals to attract support. I present them
to put a small focus on the issue of making break/continue more visible.

--- Bruce
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