Hi Troels,
You have to be very careful with Python 3 compatibility when using
lambda. I actually actively avoid this construct, as it may be
removed in the future. If you would like to use it, make sure you
thoroughly test it with Python 3. Note this very important post by
the inventor and lead developer of Python:
http://www.artima.com/weblogs/viewpost.jsp?thread=98196
From this, the lambda construct appears to be in danger of deletion in
future Python versions. Guido doesn't like it, so he may just decide
to kill it one day. Therefore it might be better to avoid it.
Cheers,
Edward
On 3 September 2014 22:50, <tlinnet@xxxxxxxxxxxxx> wrote:
Author: tlinnet
Date: Wed Sep 3 22:50:46 2014
New Revision: 25609
URL: http://svn.gna.org/viewcvs/relax?rev=25609&view=rev
Log:
Added function to lib.io to sort a list of filenames into
human-understandable alphanumeric order.
Modified:
trunk/lib/io.py
Modified: trunk/lib/io.py
URL:
http://svn.gna.org/viewcvs/relax/trunk/lib/io.py?rev=25609&r1=25608&r2=25609&view=diff
==============================================================================
--- trunk/lib/io.py (original)
+++ trunk/lib/io.py Wed Sep 3 22:50:46 2014
@@ -37,7 +37,7 @@
from os import devnull
from os import F_OK, X_OK, access, altsep, getenv, makedirs, pathsep,
remove, sep
from os.path import expanduser, basename, splitext, isfile
-from re import search
+from re import search, split
from sys import stdin, stdout, stderr
from warnings import warn
@@ -480,6 +480,31 @@
return file_obj
+def sort_filenames(filenames=None, rev=False):
+ """Sort the given list in alphanumeric order. Should be equivalent to
unix 'ls -n' command.
+
+ @keyword filenames: The list of filenames
+ @type l: list of strings
+ @keyword rev: Flag, if the list should be reverted
+ @type rev: boold
+ """
+
+ # Define function to convert to integers if text is digit.
+ convert = lambda text: int(text) if text.isdigit() else text
+
+ # Define function to create key for sorting.
+ alphanum_key = lambda key: [ convert(c) for c in split('([0-9]+)',
key) ]
+
+ # Now sort according to key.
+ filenames.sort( key=alphanum_key )
+
+ # Reverse the list if needed.
+ if rev:
+ return reversed(filenames)
+ else:
+ return filenames
+
+
def strip(data, comments=True):
"""Remove all comment and empty lines from the file data structure.
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Re: r25609 - /trunk/lib/io.py