tracebacks.py

from twisted.logger import globalLogBeginner, textFileLogObserver, Logger
from twisted.internet.defer import inlineCallbacks
from twisted.internet.task import react
from twisted.python import failure
from twisted.internet import protocol, endpoints
import sys
import twisted
print "Twisted:", twisted.__version__

log = Logger()


@inlineCallbacks
def failsToConnect(reactor):
    endpoint = endpoints.TCP4ClientEndpoint(reactor, '127.0.0.1', 9998)
    yield endpoint.connect(protocol.Factory.forProtocol(protocol.Protocol))


@inlineCallbacks
def someWork(reactor):
    try:
        yield failsToConnect(reactor)
    except:
        exc_type, exc_value, exc_tb = sys.exc_info()
        log.failure("No traceback")
        log.failure("Has traceback",
                    failure=failure.Failure(exc_value,
                                            exc_type,
                                            exc_tb))


globalLogBeginner.beginLoggingTo([textFileLogObserver(sys.stdout)])

react(someWork)