Hi there,
just trying to figure out how to iterate over two array without
computing the len of the array:
A = [1,2,3]
B = [4,5,6]
for a,b in A,B: # does not work !
print a,b
It should print:
1,4
2,5
3,6
Thanks !
4  1674 
mathieu a écrit :
Hi there,
just trying to figure out how to iterate over two array without
computing the len of the array:
A = [1,2,3]
B = [4,5,6]
for a,b in A,B: # does not work !
print a,b
It should print:
1,4
2,5
3,6
for a, b in zip(A, B):
print a, b
or, using itertools (which might be a good idea if your lists are a bit
huge):
from itertools import izip
for a, b in izip(A, B):
print a, b
Am Fri, 29 Aug 2008 03:35:51 -0700 schrieb mathieu:>
A = [1,2,3]
B = [4,5,6]
for a,b in A,B: # does not work !
print a,b
It should print:
1,4
2,5
3,6
Hey,
zip is your friend:
for a,b in zip(A,B):
print a,b
does what you want. If you deal with big lists, you can use izip from
itertools, which returns a generator.
from itertools import izip
for a,b in izip(A,B):
print a,b
HTH
Matthias
On Aug 29, 12:46 pm, Matthias Bläsing <matthias.blaes ...@rwth-
aachen.dewrote:
Am Fri, 29 Aug 2008 03:35:51 -0700 schrieb mathieu:>
A = [1,2,3]
B = [4,5,6]
for a,b in A,B: # does not work !
print a,b
It should print:
1,4
2,5
3,6
Hey,
zip is your friend:
for a,b in zip(A,B):
print a,b
does what you want. If you deal with big lists, you can use izip from
itertools, which returns a generator.
from itertools import izip
for a,b in izip(A,B):
print a,b
Thanks all !
mathieu a écrit :
(snip solution)
Thanks all !
FWIW, this has been discussed here *very* recently (a couple hours ago).
Look for a thread named "iterating over two arrays in parallel?", and
pay special attention to Terry Reedy's answer. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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