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我想運行我的服務器作爲應用程序。爲此，我有一個MyServer(name, port, host, testMode=False)類（繼承自DatagramProtocol對象）。Twistd - 使用service.Application與選項來允許參數解析
在另一個文件中，我創建了一些命令來創建和啓動我的服務器。或多或少，它看起來像：
from twisted.application import service, internet
name, port, host = #read from database
server = MyServer(name, port, host)
udp_server = internet.UDPServer(port, server)
application = service.Application("MyServer")
udp_server.setServiceParent(application)
值name, port，並且host我從數據庫中讀取。 我開始我的服務器爲'twistd -y my_server_run.py'，一切都運行完美。
但是，我希望能夠啓動我的服務器進入模式：測試模式和標準模式。因此，我想將從命令行讀取的參數作爲參數傳遞給我的對象。我查到的資料，我無法分析他們作爲sys.argv中，但我必須實現usage.Options，所以我做了如下：
from twisted.application import service, internet
from twisted.python import usage
class Options(usage.Options):
optParameters = [["test", "t", False, "The client test mode"]]
options = Options()
name, port, host = #read from database
try:
options.parseOptions()
server = MyServer(name, port, host, testMode=options['test'])
udp_server = internet.UDPServer(port, server)
application = service.Application("MyServer")
udp_server.setServiceParent(application)
然後，我跑我的服務器爲：
'twistd -y run_client.py --test True'
不過，我得到錯誤：
option -y not recognized
Unhandled Error
out: Traceback (most recent call last):
out: File "/usr/local/lib/python2.7/dist-packages/twisted/application/app.py", line 648, in run
out: runApp(config)
out: File "/usr/local/lib/python2.7/dist-packages/twisted/scripts/twistd.py", line 25, in runApp
out: _SomeApplicationRunner(config).run()
out: File "/usr/local/lib/python2.7/dist-packages/twisted/application/app.py", line 379, in run
out: self.application = self.createOrGetApplication()
out: File "/usr/local/lib/python2.7/dist-packages/twisted/application/app.py", line 444, in createOrGetApplication
out: application = getApplication(self.config, passphrase)
out: --- <exception caught here> ---
out: File "/usr/local/lib/python2.7/dist-packages/twisted/application/app.py", line 455, in getApplication
out: application = service.loadApplication(filename, style, passphrase)
out: File "/usr/local/lib/python2.7/dist-packages/twisted/application/service.py", line 411, in loadApplication
out: passphrase)
out: File "/usr/local/lib/python2.7/dist-packages/twisted/persisted/sob.py", line 224, in loadValueFromFile
out: value = d[variable]
out: exceptions.KeyError: 'application'
out: Failed to load application: 'application'
out: Could not find 'application' in the file. To use 'twistd -y', your .tac
我無法找出什麼我做錯了。任何建議都會非常有幫助。