stack dump in twisted app.py 'application' error when using twistd but works with python? -

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i trying use twisted when try run of example code provided twisted package, seems crash when use "twistd" instead of "python"

for example, using example code given twisted, if run command : twisted -ny echoserv.py

unhandled error traceback (most recent call last):   file "/usr/lib/python2.7/site-packages/twisted/application/app.py", line 652, in run     runapp(config)   file "/usr/lib/python2.7/site-packages/twisted/scripts/twistd.py", line 23, in runapp     _someapplicationrunner(config).run()   file "/usr/lib/python2.7/site-packages/twisted/application/app.py", line 386, in run     self.application = self.createorgetapplication()   file "/usr/lib/python2.7/site-packages/twisted/application/app.py", line 451, in createorgetapplication     application = getapplication(self.config, passphrase) ---  ---   file "/usr/lib/python2.7/site-packages/twisted/application/app.py", line 462, in getapplication     application = service.loadapplication(filename, style, passphrase)   file "/usr/lib/python2.7/site-packages/twisted/application/service.py", line 405, in loadapplication     application = sob.loadvaluefromfile(filename, 'application', passphrase)   file "/usr/lib/python2.7/site-packages/twisted/persisted/sob.py", line 211, in loadvaluefromfile     value = d[variable] exceptions.keyerror: 'application'  failed load application: 'application' not find 'application' in file. use 'twistd -y', .tac file must create suitable object (e.g., calling service.application()) , store in variable named 'application'. twistd loads .tac file , scans global variables 1 of name.  please read 'using application' howto details.

i using twisted version 11.0.0 tried 12.0.0 have same problem.

the version of python using 2.7.2

any ideas on helpful. have been trying deal problem few days now. thanks!

twistd -y meant used python file contains variable called application, there none in file, it's not going work.

you might want spend time reading twistd's documentation clearer idea of role in twisted ecosystem.


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