X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/b2b4f8f39a4b15cbc3b9af7c06f75bbed9a84c88..599ce05dcf12a1380c3a2181b694aed06f55fffd:/src/catalogue/helpers.py

diff --git a/src/catalogue/helpers.py b/src/catalogue/helpers.py
index f74fad3e3..4dd7bda9f 100644
--- a/src/catalogue/helpers.py
+++ b/src/catalogue/helpers.py
@@ -28,8 +28,17 @@ def get_top_level_related_tags(tags, categories=None):
     global _COUNTERS, _COUNTER_TIME
     # First, check that we have a valid and recent version of the counters.
     if getmtime(settings.CATALOGUE_COUNTERS_FILE) > _COUNTER_TIME:
-        with open(settings.CATALOGUE_COUNTERS_FILE) as f:
-            _COUNTERS = cPickle.load(f)
+        for i in xrange(10):
+            try:
+                with open(settings.CATALOGUE_COUNTERS_FILE) as f:
+                    _COUNTERS = cPickle.load(f)
+            except (EOFError, ValueError):
+                if i < 9:
+                    continue
+                else:
+                    raise
+            else:
+                break
 
     tagids = tuple(sorted(t.pk for t in tags))
     try:
@@ -59,7 +68,7 @@ def update_counters():
     def count_for_book(book, count_by_combination=None, parent_combinations=None):
         if not parent_combinations:
             parent_combinations = set()
-        tags = sorted(tuple(t.pk for t in book.tags.filter(category__in=('author', 'genre', 'epoch', 'kind'))))
+        tags = sorted(book.tags.filter(category__in=('author', 'genre', 'epoch', 'kind')).values_list('pk', flat=True))
         combs = list(combinations(tags))
         for c in combs:
             if c not in parent_combinations: