Hi Somnath, I think the exception simply means that the thread object or class does not have a cancel function. maybe read docs on Python threads to see what functions can be called on those?
On Sun, Nov 8, 2009 at 9:09 PM, somnath chakrabarti < chakrabarti.somn...@gmail.com> wrote: > Hi Alan, > > I am importing the constraint library package in the beginning that is > having classes Problem, Solver and all the methods that I am calling. Now, > as you said after making the change from > > self.p = threading.Timer(100, self.onTimeout) > > I am getting the below error. I am also attaching the constraint.py > package that my code is using > > - Somnath > > > %%%%%%% Error Message %%%%%%%%%%%%%%%%%%%% > > <constraint.BacktrackingSolver object at 0x02846F10> > Magic Square: > > Exception in thread Thread-1: > Traceback (most recent call last): > File "C:\Python26\lib\threading.py", line 525, in __bootstrap_inner > self.run() > File "C:\Python26\lib\threading.py", line 477, in run > self.__target(*self.__args, **self.__kwargs) > File "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\ms_t.py", > line 43, in getSolution > > self.solution=Problem.getSolution(self) > File > "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\constraint.py", line > 215, in getSolution > return self._solver.getSolution(domains, constraints, vconstraints) > File > "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\constraint.py", line > 524, in getSolution > return iter.next() > File > "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\constraint.py", line > 506, in getSolutionIter > pushdomains): > File > "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\constraint.py", line > 1173, in __call__ > domain.hideValue(value) > File > "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\constraint.py", line > 787, in hideValue > list.remove(self, value) > ValueError: list.remove(x): x not in list > None > Time taken: 0.047 > > Traceback (most recent call last): > File "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\csc671.py", > line 125, in <module> > ms_t.magic_square(size,func_solver()) > File "C:\Users\Somnath\Documents\NetBeansProjects\CSC671\src\ms_t.py", > line 68, in magic_square > t.cancel() > AttributeError: 'Thread' object has no attribute 'cancel' > None > Time Exceeded Limit. > > > On Sun, Nov 8, 2009 at 12:17 PM, Alan Gauld <alan.ga...@btinternet.com>wrote: > >> >> "somnath chakrabarti" <chakrabarti.somn...@gmail.com> wrote >> >> >> Below is the code that I have written to do the timeout implementation. >>> But >>> I am getting error as follows. Can anybody please help me where I am >>> going >>> wrong? >>> >> >> I have no idea how this framework is upposed to work but my >> guess is that the problem lies here: >> >> >> def getSolution(self,solver): >>> Problem.setSolver(self,solver) >>> self.p = threading.Timer(100, self.onTimeout()) >>> >> >> Thios looks like you should be providing a callback >> function self.onTimeout but you are calling the function >> instead of referencing it. This calls the method before >> self.p has been defined. >> >> You need to remove the parentheses after Timeout. >> >> I think... >> >> -- >> Alan Gauld >> Author of the Learn to Program web site >> http://www.alan-g.me.uk/ >> >> _______________________________________________ >> Tutor maillist - Tutor@python.org >> To unsubscribe or change subscription options: >> http://mail.python.org/mailman/listinfo/tutor >> > > > > -- > Thanks and regards, > Somnath Chakrabarti. > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > http://mail.python.org/mailman/listinfo/tutor > > -- Regards, Lloyd
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