Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
for j in innerLoop:
if condition:
break
else:
continue
break
Thanks,
K 6 2716 no***************@gmail.com writes:
Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
for j in innerLoop:
if condition:
break
else:
continue
break
You can do it with a try/except/raise statement but I generally prefer
to wrap both loops in a function and use a "return" statement.
On Tue, 29 Jan 2008 11:51:04 -0800 (PST) no***************@gmail.com wrote:
Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
for j in innerLoop:
if condition:
break
else:
continue
break
Ha! Think outside the box to begin with ...
P.
def cross(args):
ans = [[]]
for arg in args:
ans = [x+[y] for x in ans for y in arg]
return ans
def test():
L = [[0,1,2]]*3
for a,b,c in cross(L):
print a,b,c
if __name__=='__main__':
test()
On Jan 29, 8:55*pm, pataphor <patap...@gmail.comwrote:
On Tue, 29 Jan 2008 11:51:04 -0800 (PST)
noemailplease0...@gmail.com wrote:
Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
* *for j in innerLoop:
* * * *if condition:
* * * * * break
* *else:
* * * *continue
* * break
Ha! Think outside the box to begin with ...
P.
def cross(args):
* * ans = [[]]
* * for arg in args:
* * * * ans = [x+[y] for x in ans for y in arg]
* * return ans * *
While we're at it, a generator version:
def iproduct(head=None, *tail):
if head is None:
return ((),)
else:
return ((x,)+y for x in head for y in iproduct(*tail))
for a, b, c in iproduct('124', 'ab', 'AB'):
print a, b, c
;-)
--
Arnaud no***************@gmail.com wrote:
Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
for j in innerLoop:
if condition:
break
else:
continue
break
Perhaps Python needs a "continue N" or a "break N" statement :-)
for i in outerLoop:
for j in innerLoop:
if condition:
break 2
Seeing as we can't have a goto :-)
Jeremy
--
Jeremy Sanders http://www.jeremysanders.net/ no***************@gmail.com schrieb:
Any elegant way of breaking out of the outer for loop than below, I
seem to have come across something, but it escapes me
for i in outerLoop:
for j in innerLoop:
if condition:
break
else:
continue
break
It's working because for-loops else statements are are executed only if
the loop hasn't been terminated unexpectedly. Which is what happens
here: if the inner loop is breaked, it's else is not executed. So the
outer loop's break is called.
Diez
Jeremy Sanders wrote:
no***************@gmail.com wrote:
>Any elegant way of breaking out of the outer for loop than below, I seem to have come across something, but it escapes me
for i in outerLoop: for j in innerLoop: if condition: break else: continue break
Perhaps Python needs a "continue N" or a "break N" statement :-)
for i in outerLoop:
for j in innerLoop:
if condition:
break 2
Seeing as we can't have a goto :-)
Not true! You just have to import it: http://entrian.com/goto/
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