LISTS: Extract every other element

[Adrian Eyre]

> and build a list with every other element:
> 
>   [ 1,3,5,7,... ]

No idea how efficient these are:

>>> l = ['a', 'b', 'c', 'd']
>>> map(lambda x: l[x], range(0, len(l), 2))
['a', 'c']

or

>>> map(lambda x: l[x*2], range(len(l)/2))
['a', 'c']

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Adrian Eyre <mailto:a.eyre at optichrome.com>
Optichrome Computer Solutions Ltd
Maybury Road, Woking, Surrey, GU21 5HX, UK
Tel: +44 1483 740 233  Fax: +44 1483 760 644
http://www.optichrome.com 
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