a simple 'for' question

Rajanikanth Jammalamadaka rajanikanth at gmail.com
Wed Jul 9 02:32:31 CEST 2008


Hi!

Try this

for x in folders:
   open('my/path/way'+x+'myfile.txt','r')

Cheers,

Raj

On Tue, Jul 8, 2008 at 5:08 PM, Ben Keshet <keshet1 at umbc.edu> wrote:
> Hi fans,
>
> I want to use a 'for' iteration to manipulate files in a set of folders,
> something like:
>
> folders= ['1A28','1A6W','56Y7']
> for x in folders:
>   print x     # print the current folder
>   f = open('my/path/way/x/my_file.txt', 'r')
>   ...
>
> where 'x' in the pathway should iterate over '1A28','1A6W','56Y7'.  How
> should I identify 'x' in the pathway line as the same x that is iterating
> over 'folders'?
>
> I am getting the following error:
>
> Traceback (most recent call last):
>  File
> "C:\Python25\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py",
> line 310, in RunScript
>   exec codeObject in __main__.__dict__
>  File "C:\Linux\Dock_method_validation\myscripts\test_for.py", line 5, in
> <module>
>   f = open('c:/Linux/Dock_method_validation/x/receptor.mol2', 'r')
> IOError: [Errno 2] No such file or directory:
> 'c:/Linux/Dock_method_validation/x/receptor.mol2'
>
> I tired several variations: %x, 'x', "x", etc. all gave me similar errors.
>
> Thanks for your help,
> BK
> --
> http://mail.python.org/mailman/listinfo/python-list
>



-- 
"For him who has conquered the mind, the mind is the best of friends;
but for one who has failed to do so, his very mind will be the
greatest enemy."

Rajanikanth



More information about the Python-list mailing list