Re: change extensions

[Peter Hansen]

Tim Roberts wrote:
Bob Then [EMAIL PROTECTED] wrote:
how can i change all files from one extension to another within a direcory?
In Windows, the quickest way is:
os.system( rename *.old *.new )
I have a vague memory that this won't work on
all versions of Windows... possibly it isn't
supported on Win98?  That may not be quite right,
but I recall problems doing this in the past.
(Or was it just DOS that failed?)
-Peter
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Re: change extensions

[Tim Roberts]

Bob Then [EMAIL PROTECTED] wrote:

how can i change all files from one extension to another within a direcory?

In Windows, the quickest way is:

os.system( rename *.old *.new )
-- 
- Tim Roberts, [EMAIL PROTECTED]
  Providenza  Boekelheide, Inc.
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Re: change extensions

[Peter Hansen]

Bob Then wrote:
how can i change all files from one extension to another within a direcory?
Using Jason Orendorff's path.py module:
# change all .py files in '.' to extension .new
from path import path
for f in path('.').files():
if f.endswith('.py'):
f.rename(f.splitext()[0] + '.new')

Don't try the above in a folder containing useful
Python files! ;-)
-Peter
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RE: change extensions

[Jeffrey Maitland]

That approach works, but so does this one. 

import os, glob

input_file_list = glob.glob('*.txt')
for in_file in input_file_list:
name = in_file.split('.')
os.rename(in_file, str(name[0]) + '.' + 'text')) 

# I could have put the text extension with the period but if you use a
variable (string) for the extension then you can't

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Peter Hansen
Sent: Tuesday, April 05, 2005 10:35 AM
To: python-list@python.org
Subject: Re: change extensions

Bob Then wrote:
 how can i change all files from one extension to another within a
direcory?

Using Jason Orendorff's path.py module:

# change all .py files in '.' to extension .new
from path import path

for f in path('.').files():
 if f.endswith('.py'):
 f.rename(f.splitext()[0] + '.new')



Don't try the above in a folder containing useful
Python files! ;-)

-Peter
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Re: change extensions

[Bill Mill]

On Apr 5, 2005 10:43 AM, Jeffrey Maitland [EMAIL PROTECTED] wrote:
 That approach works, but so does this one.
 
 import os, glob
 
 input_file_list = glob.glob('*.txt')
 for in_file in input_file_list:
 name = in_file.split('.')
 os.rename(in_file, str(name[0]) + '.' + 'text'))
 

you should really use in_file.splitext - your script renames
myfile.with.lots.of.dots.txt to myfile.text instead of
myfile.with.lots.of.dots.text .

If you *really* wanted to use split(), it oughta be
''.join(in_file.split('.')[:-1]) , but why not use the built-in?

Peace
Bill Mill
bill.mill at gmail.com
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Re: change extensions

[Gerhard Häring]

Bob Then wrote:
how can i change all files from one extension to another within a direcory?
Using os.listdir, os.path.split and os.rename.
-- Gerhard
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Re: change extensions

[David Wilson]

Bob Then wrote:
 how can i change all files from one extension to another within a
direcory?

This should work:

import os

def change_exts(suffix, new_suffix, dir_name):
for name in os.listdir(dir_name):
if name.endswith(suffix):
old_pathname = os.path.join(dir_name, name)
new_pathname = old_pathname[:-len(suffix)] + new_suffix
os.rename(old_pathname, new_pathname)



David.

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