Ensued that SQL indexes are alwasy created in the same name.

Previous this used Python's builtin hash() function, which has never been guarnteed to be stable across implementations (CPython/Jython/etc.) or 32/64 bitness. However, this in practice it was stable. However, with the impending release of Python 3.3 hash randomizations is enabled by default, which would mean the index name changed between program invocations.

1 files changed, 5 insertions, 1 deletions

diff --git a/django/db/backends/creation.py b/django/db/backends/creation.py
index 6ac55eb5ff..659d35ace3 100644
--- a/django/db/backends/creation.py
+++ b/django/db/backends/creation.py
@@ -1,3 +1,4 @@
+import hashlib
 import sys
 import time
 
@@ -27,7 +28,10 @@ class BaseDatabaseCreation(object):
         Generates a 32-bit digest of a set of arguments that can be used to
         shorten identifying names.
         """
-        return '%x' % (abs(hash(args)) % 4294967296)    # 2**32
+        h = hashlib.md5()
+        for arg in args:
+            h.update(arg)
+        return h.hexdigest()[:8]
 
     def sql_create_model(self, model, style, known_models=set()):
         """