I'm starting to think like a Pythonista

[brad]

I was looking at a way to implement Ruby's upto method in python. I came
up with the code below... three years ago, I would never have thought of
list comprehension, today it seems second nature. This may be totally
un-Pythonic, but I thought it was kind of clever. Man, for some reason,
I feel like being rude and lofty acting :)

low_odds = [1,3,5,7,9]
# make a list containing 10 - 98 evens only
big_evens = big_evens = [x for x in list(xrange(99)) if x % 2 == 0 and
x >8]

low_evens = [2,4,6,8]
# make a list containing 11 - 99 odds only
big_odds = [x for x in list(xrange(100)) if x % 2 != 0 and x >9]

y = 8

if y in low_evens:
ok_numbers = low_odds + big_evens + [x for x in low_evens if x <= y]

[Erik Jones]

On Oct 10, 2007, at 2:51 PM, brad wrote:

I was looking at a way to implement Ruby's upto method in python. I
came
up with the code below... three years ago, I would never have
thought of
list comprehension, today it seems second nature. This may be totally
un-Pythonic, but I thought it was kind of clever. Man, for some
reason,
I feel like being rude and lofty acting :)

low_odds = [1,3,5,7,9]
# make a list containing 10 - 98 evens only
big_evens = big_evens = [x for x in list(xrange(99)) if x % 2 ==0
and
x >8]

big_evens = range(10, 100, 2)

>
low_evens = [2,4,6,8]
# make a list containing 11 - 99 odds only
big_odds = [x for x in list(xrange(100)) if x % 2 != 0 and x >9]

big_odds = range(11, 100, 2)
Erik Jones

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[Bjoern Schliessmann]

brad wrote:

low_odds = [1,3,5,7,9]
# make a list containing 10 - 98 evens only
big_evens = big_evens = [x for x in list(xrange(99)) if x % 2 ==
0 and x >8]

Why use xrange if you convert it to a full list in place? No
advantage there.

Regards,
Björn
--
BOFH excuse #300:

Digital Manipulator exceeding velocity parameters

[brad]

Erik Jones wrote:

big_evens = range(10, 100, 2)
big_odds = range(11, 100, 2)

Neat, but not as clever or as hard to read as mine... I'll bet it faster
though... maybe not.

The upto part is here:

ok_numbers = low_odds + big_evens + [x for x in low_evens if x <= y]