# [Tutor] style question

**dman
**
dsh8290@rit.edu

*Wed, 20 Feb 2002 18:16:39 -0500*

On Wed, Feb 20, 2002 at 02:38:44PM -0600, Christopher Smith wrote:
|* I have a question of style and am wondering if you would consider giving
*|* some feedbakc. Let's say you have a task of finding out how many of 5
*|* positive integer numbers (a-e) are even. Which (if either) of the two
*|* codes would be preferred:
*
How about this :
def is_even( n ) :
return n % 2 == 0
def count_even( l ) :
count = 0
for i in l :
if is_even( i ) :
count += 1
return count
The advantages of this style are :
o correct use of types (boolean vs. integer)
o generalizes to any finite sequence of numbers, not just 5
o each operation is coded once (no repetition like the if-else
ladder)
I'm sure this could be written even shorter using functional styles or
list comprehensions, but this is the first way I thought of writing it
and it doesn't seem quite clear and not overly long.
-D
--
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sins and purify us from all unrighteousness.
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