Py3k: repr() must get a native string.

persistent/_compat.py

@@ -22,6 +22,11 @@ if sys.version_info[0] > 2: #pragma NO COVER
     def _u(s):
         return s
 
+    def _native(s):
+        if isinstance(s, bytes):
+            return s.decode('unicode_escape')
+        return s
+
     PYTHON3 = True
     PYTHON2 = False
 
@@ -33,5 +38,10 @@ else: #pragma NO COVER
     def _u(s):
         return unicode(s, 'unicode_escape')
 
+    def _native(s):
+        if isinstance(s, unicode):
+            return s.encode('unicode_escape')
+        return s
+
     PYTHON3 = False
     PYTHON2 = True

persistent/timestamp.py

@@ -18,6 +18,7 @@ import math
 import struct
 import sys
 
+from persistent._compat import _native
 
 _RAWTYPE = bytes
 
@@ -89,7 +90,7 @@ class pyTimeStamp(object):
         return self._raw
 
     def __repr__(self):
-        return self._raw
+        return _native(self._raw)
 
     def year(self):
         return self._elements[0]