[Tutor] files in a directory

[Liam Clarke]

Hey Kumar, 

You redirect stdin a lot.

try this.

import os

def parse(filename):
   try:
     f1 = open(filename,'r')
   except IOError:
     return
     #Listdir returns a list of files and sub-dirs, and an attempt
     #to open a sub-dir raises an IOError.

   int = f1.read().split('\n')

   my_vals  = intParser(int)

   intParser return a list
   f2  = open('myvalues.txt','a')
   # I appended this one, cos I'm assuming you wanted
   #all the input in one file. For sep files, I'd just do 
   #something like f2  = open(filename+'.txt','w')

   for line in my_vals:
     f2.write(line)
     f2.write('\n')

   f2.close()
   return

kx = os.listdir('your_directory_here')

for filename in kx:
     parse(kx)


So yeah, os.listdir() is your friend. Just remember the try - IOError
block to catch sub-dirs.

Standard disclaimer -

prolly is a better, cleaner, simpler way to do it. But, this way works. 
And it's better (imao) than redirecting stdin all the time.

Regards,

Liam Clarke

On Sun, 30 Jan 2005 00:03:18 -0800 (PST), kumar s <ps_python at yahoo.com> wrote:
> Hello.
> 
> I wrote a parser to parse spot intensities. The input
> to this parser i am giving one single file
> 
> f1 = open('my_intensity_file.dml','r')
> int = f1.read().split('\n')
> 
> my_vals  = intParser(int)
> 
> intParser return a list
> f2  = open('myvalues.txt','w')
> for line in my_vals:
>      f2.write(line)
>      f2.write('\n')
> 
> f2.close()
> 
> The problem with this approach is that, i have to give
> on file per a run. I have 50 files to pare and i want
> to do that in one GO.  I kepy those 50 files in one
> directory. Can any one suggest an approach to automate
> this process.
> 
> I tried to use f1 = stdin(...) it did not work. i dont
> know , possible is that i am using incorrect syntax.
> 
> Any suggestions.
> 
> Thank you.
> K
> 
> 
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