> Sayth Renshaw wrote, on January 03, 2017 6:54 AM
> >
> > Hi
> >
> > This is simple, but its getting me confused.
> >
> > I have a csv writer that opens a file and loops each line of
> > the file for each file and then closes, writing one file.
> >
> > I want to alter the behaviour to be a written file for each
> > input file. I saw a roundrobin example however it failed for
> > me as you cannot get len(generator) to use a while loop on.
> > it exhausts
> >
> > should I use the same for again after the with open?
> >
> > rootobs in this code is my generator and I am already looping
> > it however
> > def data_attr(roots):
> > """Get the root object and iter items."""
> > for file in rootobs:
> > base = os.path.basename(file.name)
> > write_to = os.path.join("output",
> > os.path.splitext(base)[0] + ".csv")
> > with open(write_to, 'w', newline='') as csvf:
> > race_writer = csv.writer(csvf, delimiter=',')
> > race_writer.writerow(
> > ["meet_id", "meet_venue", "meet_date", "meet_rail",
> > ...
> > # other categories here
> > ...
> > "jockeysurname", "jockeyfirstname"])
> > for xml_data in roots:
> > ...
> > # parsing code
> > for noms in race_child:
> > if noms.tag == 'nomination':
> > race_writer.writerow(
> > [meet_id, meet_venue, meet_date,
> > ...
> > #parsing info removed
> >
> noms.get("jockeyfirstname")])
> >
> > Cheers
> > Sayth
>
> What's the code for your generator? And I don't see where you
> call 'next'.
I think you're expecting
for file in rootobs
to get the next yield for you from rootobs, but unless someone corrects me, I
don't think you can expect a 'for' statement to do that. You need to have a
'next' statement inside your for loop to get the next yield from the generator.
But I might not understand exactly what you're asking.
--
https://mail.python.org/mailman/listinfo/python-list
