Can a List Comprehension do ____ ?

Steven Bethard steven.bethard at gmail.com
Thu Jul 15 01:01:42 CEST 2004


Steve <lonetwin at gmail.com> wrote in message news:<mailman.360.1089792115.5135.python-list at python.org>...
> so the LC is:
> a) return a list :
>         []
> b) iterating over every element in 'breaks', using it's index:
>         [ for i in range(len(breaks)) ]
> c) and return the max() of the i'th element and the min() of it's
> successive element:
>         [ (max(b[i]), min(b[i+1])) for i in range(len(breaks)) ]
> d) remembering that there would be no successive element for the last
> element in the list:
>         [ (max(b[i]), min(b[i+1])) for i in range(len(breaks)) if i+1
> < len(breaks) ]
> 
> HTH
> Steve

Or, slightly more concicely, though perhaps less readably:

[(breaks[i][1], breaks[i+1][0]) for i in range(len(breaks) - 1)]

Steve



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