Pickle Problem

[Fab86]

On Mar 4, 2:49 pm, MRAB <goo... at mrabarnett.plus.com> wrote:
> Fab86 wrote:
> > On Mar 4, 1:40 am, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
> >> En Tue, 03 Mar 2009 23:11:30 -0200, Fab86 <fabien.h... at gmail.com> escribió:
>
> >>> On Mar 4, 12:00 am, MRAB <goo... at mrabarnett.plus.com> wrote:
> >>>> Fab86 wrote:
> >>>>> On Mar 3, 8:59 pm, "Gabriel Genellina" <gagsl-... at yahoo.com.ar> wrote:
> >>>>>> How to "spell" exactly the exception name should appear in the  
> >>>>>> documentation; might be yahoo.SearchError, or  
> >>>> yahoo.search.SearchError, or  
> >>>>>> yahoo.errors.SearchError, or similar.
> >>>>> I have been trying except SearchError: however I get the error:
> >>>>> Traceback (most recent call last):
> >>>>>   File "C:\Downloads\MoS\yws-2.12\Python\pYsearch-3.1\timeDelay.py",
> >>>>> line 19, in <module>
> >>>>>     except SearchError:
> >>>>> NameError: name 'SearchError' is not defined
> >>>>> I have searched all documents for terms along the lines of searcherror
> >>>>> but am finding nothing..
> >>>> It's defined in the module you imported to get the search functionality.
> >>> I imported:
> >>> from yahoo.search.web import WebSearch
> >>> However there is nothing re SearchError in that doc or in the .py.
> >>> I can only find a reference to SearchError in the __init__ file as a
> >>> class called SearchError
> >> The __init__.py indicates a package  
> >> <http://docs.python.org/tutorial/modules.html#packages>
> >> You didn't tell the package name (the name of the directory containing  
> >> __init__.py) so this is somewhat generic. If the package name is foo, use:
> >>  from foo import SearchError
> >> If foo is a subpackage under bar, use:
> >>  from bar.foo import SearchError
>
> >> It *might* be:
> >>  from yahoo.search.web import WebSearch
> >> or perhaps:
> >>  from yahoo.search import WebSearch
>
> >> You can enter those lines in the interactive interpreter to discover the  
> >> right form. (This really ought to have been documented)
>
> >> --
> >> Gabriel Genellina
>
> > Ok, I managed to import the correct error class (was in a non expected
> > place)
>
> > Just as I thought I was finished, I encountered a final problem. I am
> > running a while loop which is constantly adding search results to a
> > file, like this (print >> f, res.total_results_available). I have put
> > an exception in that if it times out, it simply tries again until its
> > finished. The problem is that the loop re-write all new results
> > continuing on from the previous searches. I would like to somehow
> > delete all in that file and start again.
>
> > I thought this could simply be achieved by putting f.close() in the
> > exception and then it re-writes it however I am getting this error:
>
> > Traceback (most recent call last):
> >   File "/home/csunix/scs5fjnh/FYProj/Python/pYsearch-3.1/test9.py",
> > line 17, in <module>
> >     print >> f, res.total_results_available
> > ValueError: I/O operation on closed file
>
> > Is there another way rather than closing the file? Is it possible to
> > delete all within the file?
>
> You could do:
>
>      f.seek(0)
>      f.truncate()
>
> I hope you don't just discard all the results you've got so far and then
> start from the beginning again.

MRAB, yes I do, thats the only way I can I get it to work. I wouldnt
know how to make the program read  the expection and then carry of
from the last search term.

Is that even possible?