[Python-Dev] Wishlist: dowhile

[Michael Chermside]

Jp Calderone writes:
> Anything can be a for loop.
>
>   for chunk in iter(lambda: f1.read(CHUNK_SIZE), ''):
>       f2.write(chunk)

Raymond responds:
> It would be nice to have this encapsulated in a file method:
>
>     for chunk in f1.iterblocks(CHUNK_SIZE):
>         f2.write(chunk)

What ever happened to "Not every 3 line function needs to be a builtin"?

It's a common pattern. It's easy to do. Where's the problem?

-- Michael Chermside