AttributeError: class UserDict has no attribute '__class__'

[techtonik]

Looks like tracer chokes on UserDict, which doesn't have __class__ attribute.

>>> from UserDict import UserDict as _UserDict
>>> _UserDict
<class UserDict.UserDict at 0x01AEBD88>
>>> _UserDict.__class__
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: class UserDict has no attribute '__class__'
>>>

SQLite DB contains this error_message: class UserDict has no attribute '__class__'

[techtonik]

Looks like this is fixed in 7b72b60, but also not released.