"for line in fd" twice

[Steven Taschuk]

Quoth Jack Diederich:
  [...]
> The part
> for (line) in fd:
>   
> will make a temporary list of all the lines in fd before it starts iterating.
> so by the time you get to the second for() loop the file has been exhausted.

?!

    >>> fd = file('python-list')
    >>> for line in fd:
    ...     break    
    ... 
    >>> fd.readline()     # fd not exhausted
    '=09=09=09     6\n'

It reads ahead, certainly, but it doesn't read the whole file.

-- 
Steven Taschuk                                                 o- @
staschuk at telusplanet.net                                      7O   )
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