Added a custom walk function (like os.walk) that supports symlinks for Python<2.6 compatibility.

compressor/management/commands/mtime_cache.py

@@ -6,7 +6,7 @@ from django.core.management.base import NoArgsCommand, CommandError
 
 from compressor.cache import cache
 from compressor.conf import settings
-from compressor.utils import get_mtime, get_mtime_cachekey
+from compressor.utils import get_mtime, get_mtime_cachekey, walk
 
 class Command(NoArgsCommand):
     help = "Add or remove all mtime values from the cache"
@@ -57,7 +57,7 @@ class Command(NoArgsCommand):
         files_to_add = set()
         keys_to_delete = set()
 
-        for root, dirs, files in os.walk(settings.MEDIA_ROOT, followlinks=options['follow_links']):
+        for root, dirs, files in walk(settings.MEDIA_ROOT, followlinks=options['follow_links']):
             for dir_ in dirs:
                 if self.is_ignored(dir_):
                     dirs.remove(dir_)

compressor/utils.py

@@ -61,3 +61,18 @@ def get_mod_func(callback):
     except ValueError:
         return callback, ''
     return callback[:dot], callback[dot+1:]
+
+
+def walk(root, topdown=True, onerror=None, followlinks=False):
+    """
+    A version of os.walk that can follow symlinks for Python < 2.6
+    """
+    for dirpath, dirnames, filenames in os.walk(root, topdown, onerror):
+        yield (dirpath, dirnames, filenames)
+        if followlinks:
+            for d in dirnames:
+                p = os.path.join(dirpath, d)
+                if os.path.islink(p):
+                    for link_dirpath, link_dirnames, link_filenames in walk(p):
+                        yield (link_dirpath, link_dirnames, link_filenames)
+