Open a List of Files
BJ Swope
bigblueswope at gmail.com
Wed Jan 9 00:40:56 EST 2008
On Jan 8, 2008 9:34 PM, Terry Jones <terry at jon.es> wrote:
>
> I think you should revisit this decision. Something like Fredrik's code
> is
> the way to go. It has multiple advantages:
>
> - It's much shorter.
> - It's arguably easier to add/remove to/from.
> - It has less risk of error (much less repetition).
> - It allows your code to later take a string file tag and
> write to that file by looking up its file descriptor in the dict.
> - You can close all open files with a trivial loop.
>
> Also, if you start writing code like Fredrik's instead of like what you
> fell back on you'll make yourself a better programmer (in general, not
> just
> in Python).
>
> Terry
>
Thanks for the advice Terry. With your prompting I went back and looked at
the examples and sought to understand them.
The results are...
#File Creations/Openings
def getfilename(host_path, fn):
return os.path.join(host_path, '%s.txt' % fn)
outfiles_list = ['messages', 'deliveries', 'actions', 'parts', 'recipients',
'viruses', 'esp_scores']
open_files = {}
for fn in outfiles_list:
open_files[fn] = open(getfilename(host_path, fn), 'wb')
#Referring to files to write in various places...
open_files['deliveries'].write(flat_line)
open_files['deliveries'].write('\n')
#And finally to close the opened files
for fn in open_files.keys():
open_files[fn].close()
I sure am glad I posted this to the list. It is exactly the kind of stuff I
was hoping to find.
Again, to all who answered, Thank You!
BJ
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