Btw, if you run into trouble with inheritance, there seems to be
something broken. The quick & dirty fix below works for me:
Index: lib/sqlalchemy/attributes.py
===================================================================
--- lib/sqlalchemy/attributes.py (revision 1775)
+++ lib/sqlalchemy/attributes.py (working copy)
@@ -635,7 +635,10 @@
def reset_class_managed(self, class_):
"""removes all InstrumentedAttribute property objects from the
given class."""
for attr in self.managed_attributes(class_):
- delattr(class_, attr.key)
+ try:
+ delattr(class_, attr.key)
+ except:
+ pass
def is_class_managed(self, class_, key):
"""returns True if the given key correponds to an instrumented
property on the given class."""
I did not do any debugging, I just always got an exception and caught
it here. Ugly, but works. Is there a place to file a bug report for
this?
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