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POTwisted, Deferred full traceback
 

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    <p>I'm just learning to write applications on Twisted and so do a lot of mistakes.</p> <p>Suppose there is a code:</p> <pre><code>d = defer.Deferred() d.addCallback(self.start_app) #d.addErrback(self.command_die) d.callback(0) def start_app(self, d): #import os return os.startfile(self.path) def command_die(self, d): print ('com_die', d) </code></pre> <p>We have error in os.startfile(self.path) and Big Traceback:</p> <pre><code>Unhandled error in Deferred: Unhandled Error Traceback (most recent call last): File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 542, in _runCallbacks current.result = callback(current.result, *args, **kw) File "C:/Dropbox/my_py/client3.py", line 100, in command_analiz d.callback(i) File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 361, in callback self._startRunCallbacks(result) File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 455, in _startRunCallbacks self._runCallbacks() --- &lt;exception caught here&gt; --- File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 542, in _runCallbacks current.result = callback(current.result, *args, **kw) File "C:/Dropbox/my_py/client3.py", line 353, in start_eve_d return os.startfile(self.path) exceptions.NameError: global name 'os' is not defined </code></pre> <p>If I uncomment #d.addErrback(self.command_die) </p> <p>We have little "log" create by print ('com_die', d):</p> <pre><code>('com_die', &lt;twisted.python.failure.Failure &lt;type 'exceptions.NameError'&gt;&gt;) </code></pre> <p>Is there a way to get the full Log \ TraceBack on design time?</p> <p>At the moment I to understand where there was a new error, it is necessary to comment addErrorback `s</p>
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