[Tutor] group txt files by month

[questions anon]

thanks for responding.
Glob and os.walk will work but I would need to type up a separate command
for each month of each year and that doesn't seem very efficient. Is there
a way to make it go through and group txt files with similar filenames
e.g something like:
if fname.endswith('.txt')and fname[0:7]==fname[0:7]
e.g. r20110101.txt and r20110102.txt should go together but r20110601
should not.
thanks

On Tue, Apr 3, 2012 at 4:59 PM, Alan Gauld <alan.gauld at btinternet.com>wrote:

> On 03/04/12 04:59, questions anon wrote:
>
>  I have a list of txt files that contain daily rainfall for many years.
>> They are set out like:
>> r20110101.txt
>> r20110102.txt
>> r20110103.txt
>> and so on for each day for many years.
>>
>> MainFolder=r"E:/Rainfalldata/"
>> outputFolder=r"E:/test/"
>> for (path, dirs, files) in os.walk(MainFolder):
>>
>
> If the files are all in a single folder you might be better using
> glob.glob() rather than os.walk. You can pass a filename pattern
> like *.txt to glob(). This might make it easier to group the
> files by year... 2010*.txt for example.
>
> You can do it with walk too its just a bit more effort. But if the files
> are in multiple folders walk() is probably  better.
>
> --
> Alan G
> Author of the Learn to Program web site
> http://www.alan-g.me.uk/
>
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