Make Exception picklable #169
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There is a bug in pickle [1], due to which it cannot dump Exception
subclasses with different super() args:
Simple reproducer:
In [29]: import clickhouse_driver.errors as err
In [30]: pickle.loads(pickle.dumps(err.ServerException(message='foo', code=1, nested=Exception('foo'))))
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-30-6d4a4869bbeb> in <module>
----> 1 pickle.loads(pickle.dumps(err.ServerException(message='foo', code=1, nested=Exception('foo'))))
TypeError: __init__() missing 2 required positional arguments: 'message' and 'code'
[1]: https://bugs.python.org/issue37287
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There is a bug in pickle 1, due to which it cannot dump Exception
subclasses with different super() args:
Simple reproducer: