無盡while循環混亂

所以我想計劃在9x9的網格中的路徑，所以boardSize爲9 while循環應停止路徑列表中的81的長度以上，爲什麼是可能的，它可以得到一個的3531when生物長度爲7,5和目標是在5,2和立面圖是0？我的while循環是錯誤的還是你認爲它可能在別處？無盡while循環混亂

def planPath(self, creature, goal, board): 
     print("in the path")  
     path = [board[creature.x][creature.y]]  
     while goal not in path or len(path) < self.boardSize ** 2: 
      print("path length") 
      print(len(path)) 
      nextPossible = {} 
      for neighbor in path[-1].neighbors: 
       if type(neighbor) is not Land.Water: 
        nextPossible[neighbor] = abs(neighbor.location[0] - goal.location[0]) + abs(neighbor.location[1] - goal.location[1]) + abs(neighbor.elevation - goal.elevation)  
      path.append(min(nextPossible, key=nextPossible.get)) 
     return path

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2013-03-28 EasilyBaffled

我認爲你只需要在'while'語句中將'或'更改爲'和'。 – Marius 2013-03-28 04:42:06

* *號我怕這將是愚蠢的東西類似的，謝謝。 – EasilyBaffled 2013-03-28 04:51:59

@Marius - 爲什麼不作爲答案發布？與封閉的問題比問題都沒有:) – mgilson 2013-03-28 05:48:21

你想要的while循環結束的時候，路徑長度達到了廣場上的板級使用and在while循環會結束時，要麼這個表達式的數量，而不是or：

goal not in path

或此表達式：

len(path) < self.boardSize ** 2

評估爲False。使用or，只要那些表現之一爲真，則循環將繼續運行。所以你的固定代碼是：

def planPath(self, creature, goal, board): 
     print("in the path")  
     path = [board[creature.x][creature.y]]  
     while goal not in path and len(path) < self.boardSize ** 2: 
      print("path length") 
      print(len(path)) 
      nextPossible = {} 
      for neighbor in path[-1].neighbors: 
       if type(neighbor) is not Land.Water: 
        nextPossible[neighbor] = abs(neighbor.location[0] - goal.location[0]) + abs(neighbor.location[1] - goal.location[1]) + abs(neighbor.elevation - goal.elevation)  
      path.append(min(nextPossible, key=nextPossible.get)) 
     return path

來源

2013-03-28 07:32:55 Marius

無盡while循環混亂

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