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POError!!! cant concatenate the tuple to non float
 

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  1. POError!!! cant concatenate the tuple to non float
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    <pre><code>stack = [] closed = [] currNode = problem.getStartState() stack.append(currNode) while (len(stack) != 0): node = stack.pop() if problem.isGoalState(node): print "true" closed.append(node) else: child = problem.getSuccessors(node) if not child == 0: stack.append(child) closed.apped(node) return None </code></pre> <p>code of successor is:</p> <pre><code>def getSuccessors(self, state): """ Returns successor states, the actions they require, and a cost of 1. As noted in search.py: For a given state, this should return a list of triples, (successor, action, stepCost), where 'successor' is a successor to the current state, 'action' is the action required to get there, and 'stepCost' is the incremental cost of expanding to that successor """ successors = [] for action in [Directions.NORTH, Directions.SOUTH, Directions.EAST, Directions.WEST]: x,y = state dx, dy = Actions.directionToVector(action) nextx, nexty = int(x + dx), int(y + dy) if not self.walls[nextx][nexty]: nextState = (nextx, nexty) cost = self.costFn(nextState) successors.append( ( nextState, action, cost) ) # Bookkeeping for display purposes self._expanded += 1 if state not in self._visited: self._visited[state] = True self._visitedlist.append(state) return successors </code></pre> <p>The error is:</p> <pre><code>File line 87, in depthFirstSearch child = problem.getSuccessors(node) File line 181, in getSuccessors nextx, nexty = int(x + dx), int(y + dy) TypeError: can only concatenate tuple (not "float") to tuple </code></pre> <p>When we run the following commands:</p> <pre><code> print "Start:", problem.getStartState() print "Is the start a goal?", problem.isGoalState(problem.getStartState()) print "Start's successors:", problem.getSuccessors(problem.getStartState()) </code></pre> <p>we get:</p> <pre><code>Start: (5, 5) Is the start a goal? False Start's successors: [((5, 4), 'South', 1), ((4, 5), 'West', 1)] </code></pre>
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    1. USShilpa
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    1. COthis is not the same question. I dont have free time to ask repeated questions here. The error is different but the code is same. I have also put more details into it.
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      1. USShilpa
    2. COnow plz dont close this question also
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    3. CO`TypeError: can only concatenate tuple (not "float") to tuple` == `TypeError: can only concatenate tuple (not "float") to tuple`. Same question.
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      1. USWayne Werner
 

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