Python compiler generates wrong code if there is function throwing a typedef of exception with another namespace

namespace py error
exception KolodaException {
    string message
}

namespace py biz
include "error.thrift"
typedef error.KolodaException KolodaException
BizService {
    void doSomeBiz() throws (1: KolodaException ex)
}

    try:
      result.success = self._handler.doSomeBiz()
    except KolodaException as ex:
      result.ex = ex