Jean-Paul 您好！ Thanks for your help. Because i am a fresh man to twisted. I will roll back to version 2.x and try the application again. 谢谢！！ ---------------------------- 姓名 : 吴志高/Charles 电话 : (+086)13410859946 邮箱 : wuzhiga...@163.com ================================================ At 2013-09-17 20:14:08,exar...@twistedmatrix.com wrote: >On 09:06 am, _...@lvh.io wrote: >>Hi Charles, >> >> >>Yes, twistd doesn't appear to work on py3k. Not being able to import >>_preamble is normal (once Twisted has been installed), but _preamble >>does >>assume sys.exc_clear exists, which isn't true on 3.x. >> >>I couldn't find any ticket on this. Perhaps you should file it (and >>maybe >>fix it!) :) > >I think there are still many unported dependencies of `twistd` to port >first. >>It's my understanding that the new except clause semantics are expected >>to >>take care of this problem. >> >>Can someone comment as to why this was put there in the first place, >>and, >>specifically, why it can't just be "pass"? Is there some logging system >>that looks at the current exception or something when twistd (or some >>other >>script) starts? > >Both `log.err()´ and `Failure()´ look at the current exception. If we >don't `sys.clear_exc()´ here then the first piece of code that tries to >use either of those may get a surprising result. The current exception >state can last a long time so this surprise can hide for a remarkably >long time before showing up. > >The exception state also holds references to lots of extra things on the >stack which is undesirable even if there are no other side-effects. > >Jean-Paul > >_______________________________________________ >Twisted-Python mailing list >Twisted-Python@twistedmatrix.com >http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
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