Comments on: Itertools http://joernhees.de/blog/2010/07/23/itertools/ Science, code and links. Wed, 01 Feb 2012 14:54:16 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: joern http://joernhees.de/blog/2010/07/23/itertools/#comment-31 joern Sat, 24 Jul 2010 15:40:57 +0000 http://joernhees.de/blog/?p=101#comment-31 You can also use generator expressions instead of izip: [cc_python] pairs = ( (i,j) for i in g for j in h ) pairs.next() # (a,1) # ... [/cc_python] And [cci_python]itertools.islice()[/cci_python] comes in handy if you just need to iterate over a (large*) part of the resulting list. * you could use [cci_python]list(it.islice(pairs, 10))[/cci_python] if it's small (here 10 first pairs). You can also use generator expressions instead of izip:

pairs = ( (i,j) for i in g for j in h )
pairs.next() # (a,1)
# ...

And itertools.islice() comes in handy if you just need to iterate over a (large*) part of the resulting list.
* you could use list(it.islice(pairs, 10)) if it’s small (here 10 first pairs).

]]> By: Günther http://joernhees.de/blog/2010/07/23/itertools/#comment-29 Günther Sat, 24 Jul 2010 14:41:26 +0000 http://joernhees.de/blog/?p=101#comment-29 Cool -- I recently implemented the zip() function myself, thanks for the hint! :-) Cool — I recently implemented the zip() function myself, thanks for the hint! :-)

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