The rap against "while True:" loops
Paul Rubin
http
Tue Oct 13 18:47:07 EDT 2009
Steven D'Aprano <steven at REMOVE.THIS.cybersource.com.au> writes:
> But the consequence of that simplicity and speed is that they're not as
> general as a for-loop. This was a design decision. But change the design
> and you could have something like this:
>
> [expr for name in seq until cond]
>
> which breaks when cond becomes true.
from itertools import takewhile
xs = [expr(name) for name in takewhile(lambda s: not cond(s), seq)]
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