I have a very strange case here. I have a python node that has a class with several attributes one of which is currentPosition. My code runs without problems for the initial iterations and very often breaks before the last iteration. I have identified the problem segment and where everything goes wrong, it is in the constructor!

print "path.currentPosition and path.speed",path.currentPosition,path.speed

newPath=Path(path.currentPosition,path.speed)

print "newPath.currentPosition and newPath.speed",newPath.currentPosition,newPath.speed

I will copy the function is which I see the error:

---

def computePathWithoutWaypoints(self, path, waypointsToExclude):
    '''! Compute the path based on the current path but without considering some tasks

    It have to recompute the path in some cases using the motion_planner so it can be slow.
    Necessary to estimateRobotLossWithoutWaypoints()
    '''

    print "path.currentPosition, path.speed",path.currentPosition, path.speed
    newPath=Path(path.currentPosition, path.speed)
    print "NEW path.currentPosition, path.speed", newPath.currentPosition,newPath.speed

    i=0
    lastAdded=-1
    conflict=False
    for waypoint in path:
        # print waypoint
        if waypoint in waypointsToExclude:
            conflict=True
            i+=1
            continue

        if conflict==False:
            newPath.append(path.waypointsPlanned[i],path.timePlanned[i])
        elif i-lastAdded==1:
            newPath.append(path.waypointsPlanned[i],updateTime=True)
        else:
            pathToWaypoint,timeToWaypoint=self.computePathToWaypoint(waypoint, startingPoint=newPath.lastPlannedPosition(),startingTime=newPath.lastPlannedTime())
            newPath.append(pathToWaypoint,timeToWaypoint)

        i+=1
        lastAdded=i-1

    return newPath

---

Here is my Class (off course parts of it): class Path:

waypointsPlanned=0
timePlanned=0
currentPosition=0
speed=0.3

def __init__(self,currentPosition,speed):

    self.waypointsPlanned=[]
    self.timePlanned=[]
    self.currentPosition=currentPosition
    self.speed=speed

Now, I've checked all the indentation and made sure there is not a problem there. I can't understand what is happening inside this constructor. I get meaningful and correct values in the first print and upon second one I get:

>  print  newPath.currentPosition,newPath.speed    AttributeError: 'Path' object has no attribute 'currentPosition'

Please let me know what could be the problem.

Thanks, Zeynab