When is List Comprehension inappropriate?
bensherman at gmail.com
Mon Mar 19 15:41:59 CET 2007
I have recently learned how list comprehension works and am finding it
extremely cool. I am worried, however, that I may be stuffing it into
places that it does not belong.
What's the most "pythony" way to do this:
even = 
for x in range(0,width,2):
for y in range(0,height,2):
color = im.getpixel((x,y))
versus list comprehension:
even2 = [((x,y), im.getpixel((x,y))) for x in range(0,width,2) for y
Is there a computational difference in creating a blank list and
appending to it versus doing a list comprehension? Are there
advantages to it outside of short and pretty code?
Feel free to tell me a different way to do this, as well.
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