Python services don't transmit a TException to clients when one is raised.

test/test.sh fails for all Python servers for this reason.

In ThriftTest.thrift, it says that implementation of the service should raise TException when the input to testException equals "TException". However, the generated Python code only forwards exceptions to clients if they are of the types declared in the service definition. If you raise an exception of another type, the server simply does not respond. This strikes me as a bug (at the very least, it is different from the behavior on C++), since the behavior is inconsistent across languages and the test cannot possibly pass when the server is written in Python.