On 05/09/10 19:18, Steven D'Aprano wrote: > On Sun, 09 May 2010 15:17:38 +1000, Lie Ryan wrote: > >> On 05/09/10 07:09, Günther Dietrich wrote: >>> >>> Why not this way? >>> >>>>>> a = [[1,2,3,4], [5,6,7,8]] >>>>>> for i in a: >>> .... for j in i: >>> .... print(j) >>> .... >>> 1 >>> 2 >>> 3 >>> 4 >>> 5 >>> 6 >>> 7 >>> 8 >>> >>> Too simple? >> >> IMHO that's more complex due to the nested loop, > > What's so complex about a nested loop?
one more nested tab. That extra whitespaces is quite irritating. And why are you saying that it is > "more complex" than the Original Poster's solution, which also had a > nested loop, plus a pointless list comprehension? You misunderstood. Tycho Anderson posted an itertools.chain(*chain) solution for which Gunther Dietrich remarked "why not a nested loop"; I am replying to Gunther Dietrich's nested loop with "because nested loop is more complex than chain()" and added that the original[Tycho Anderson's] chain solution has a subtle bug when facing infinite generator of iterables. >> though I would >> personally do it as: >> >> a = [ [1,2,3,4], [5,6,7,8] ] >> from itertools import chain >> for i in chain.from_iterable(a): >> print i >> >> so it won't choke when 'a' is an infinite stream of iterables. > > Neither will a nested for-loop. -- http://mail.python.org/mailman/listinfo/python-list
