This one time, at band camp, Tim Leslie wrote: >Here's my current musings on "new python syntax features that would be >really, really, cool". > >A common idiom[1] when looping is to do something like: > >for i in somelist: > if not condition: > break > do_stuff() > >Wouldn't it be cool[2] if instead you could do something like: > >for i in somelist while condition: > do_stuff() > >My use case for this was doing stuff with prime numbers where you'd >want to take the first however many from a big list of primes, e.g[3].
List comprehensions! >def is_prime(n, primes): > """ primes is a list of primes where sqrt(n) <= max(primes) < n""" > for p in primes while p*p <= n: > if n % p == 0: > return False > return True > >Does this look like a sane piece of syntax to other people? If it >existed would you use it? Does something like this exist somewhere and >I'm just really slow? [p for p in [p in primes if p*p < n] if n % p == 0] and then fold that all together ;-) _______________________________________________ coders mailing list coders@slug.org.au http://lists.slug.org.au/listinfo/coders
