(self,t,y)
this method calls self._transition_pdf(x) in the subclass
this method calls self._transition_pdf(x) in the subclass
this method calls self . _transition_pdf ( x ) in the subclass
def transition_pdf(self,t,y):
        "this method calls self._transition_pdf(x) in the subclass"
        self._check_time(t)
        if not self.conditional:
            return self._transition_pdf(self.startPosition, t-self.startTime, y)
        else:
            return self._transition_pdf(self.startPosition, t-self.startTime, y)*self._transition_pdf(y, self.endTime-t, self.endPosition)\
                    /self._transition_pdf(self.startPosition,self.endTime - self.startTime, self.endPosition)
def transition_pdf ( self , t , y ) : self . _check_time ( t ) if not self . conditional : return self . _transition_pdf ( self . startPosition , t - self . startTime , y ) else : return self . _transition_pdf ( self . startPosition , t - self . startTime , y ) * self . _transition_pdf ( y , self . endTime - t , self . endPosition ) / self . _transition_pdf ( self . startPosition , self . endTime - self . startTime , self . endPosition )