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>>> q_file = open(questions_location) #opens the document successfully
>>> for line in q_file:
print line

# prints document successfully
>>> line
# prints last line of document
>>> for line in q_file:
print line # prints nothing

....why does it print nothing?

On 01/07/2011 09:42 PM, John wrote:
>>>> q_file = open(questions_location) #opens the document successfully
>>>> for line in q_file:
> print line
>
> # prints document successfully
>>>> line
> # prints last line of document
>>>> for line in q_file:
> print line # prints nothing
>
> ...why does it print nothing?

IIRC, iterating through the lines in a file moves the cursor (is that
the correct term?) to the end of the file. After the first one, use
q_file.seek(0) to go back to the start. I think.

~Corey Richardson

On Jan 7, 6:47*pm, Corey Richardson <kb1...@aim.com> wrote:
> On 01/07/2011 09:42 PM, John wrote:
>
> >>>> q_file = open(questions_location) #opens the document successfully
> >>>> for line in q_file:
> > * * * * * *print line
>
> > # prints document successfully
> >>>> line
> > # prints last line of document
> >>>> for line in q_file:
> > * * * * * *print line # prints nothing
>
> > ...why does it print nothing?
>
> IIRC, iterating through the lines in a file moves the cursor (is that
> the correct term?) to the end of the file. After the first one, use
> q_file.seek(0) to go back to the start. I think.
>
> ~Corey Richardson

fantastic. thanks, corey!

On Fri, 7 Jan 2011 18:42:45 -0800 (PST), John <> wrote:
>>>> q_file = open(questions_location) #opens the document successfully
>>>> for line in q_file:
> print line
>
> # prints document successfully
>>>> line
> # prints last line of document
>>>> for line in q_file:
> print line # prints nothing
>
> ...why does it print nothing?

open(filename) returns an iterator, not a list. Once you
have exhausted the iterator, it stays exhausted.


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