fileinput.input, readlines and ...

[Scott David Daniels]

Peter Otten wrote:
> ...
> If you need more than a few name value pairs it pays to put the data in a 
> dictionary first:
> 
> # assuming that values always consist of a single line
> with open(filename) as instream:
>     lines = (line.strip() for line in lines)
>     lookup =  dict(zip(lines, lines))
> print lookup["Data2"]
> print lookup["Data3"]

Little bit of a fluff-up here.  Perhaps something like:

     with open(filename) as instream:
         lines = (line.strip() for line in instream)
     lookup = dict(zip(lines[::2], lines[1::2]))

The other way to do it is:

     lookup = {}
     with open(filename) as instream:
         gen = (line.strip() for line in instream)
         for key in gen:
             lookup[key] = next(gen)

--Scott David Daniels
Scott.Daniels at Acm.Org