exceptions.py 文件源码

def format_trace(self):
        if self.has_trace():
            # convert trace entries back to tuples. the trace member was
            # set by the server side rpc mechanism. rpc messages cannot
            # contain tuples (incompatible with JSON) so the entries were
            # converted to lists.
            convert = []
            for entry in self.trace:
                convert.append(tuple(entry))
            formatted = traceback.format_list(convert)
            return ''.join(formatted)
        return ''