Merge pull request #7 from ertugerata/master

remove.py need import os

pisi/api.py

@@ -962,7 +962,7 @@ def clearCache(all=False):
 
         # sort dictionary by value from PEP-265
         from operator import itemgetter
-        return sorted(iter(sizes.items()), key=itemgetter(1), reverse=False)
+        return sorted(iter(list(sizes.items())), key=itemgetter(1), reverse=False)
 
     def removeOrderByLimit(cacheDir, order, limit):
         totalSize = 0

pisi/operations/remove.py

@@ -12,6 +12,7 @@
 
 import gettext
 import sys
+import os
 
 import pisi
 import pisi.atomicoperations as atomicoperations