Question

我已经使用Reticality建议的修改更新了此代码。我想访问hands_count的值，它位于数据包[]和/或下面的数组类型[]的数组中。

def history2packets(self, history, game_id, cache):
    game_index = 0
    player_list_index = 7
    packets = []
    for event in history:
        self.event = event
        type = event[0]
        if type == "game":
            (type, level, hand_serial, hands_count, time, variant, betting_structure, player_list, dealer, serial2chips) = event
            if len(serial2chips) > 1:
                nochips = 0
                for (serial, chips) in serial2chips.iteritems():
                    if serial == 'values':
                        continue
                    packets.append(PacketPokerPlayerChips(game_id = game_id,
                                                          serial = serial,
                                                          bet = nochips,
                                                          money = chips))
            packets.append(PacketPokerInGame(game_id = game_id,
                                             players = player_list))
            if self.previous_dealer == dealer:
                previous_dealer = -1
            else:
                previous_dealer = self.previous_dealer
            packets.append(PacketPokerDealer(game_id = game_id,
                                             dealer = dealer,
                                             previous_dealer = previous_dealer))
            self.previous_dealer = dealer
            packets.append(PacketPokerStart(game_id = game_id,
                                            hand_serial = hand_serial,
                                            hands_count = hands_count,
                                            time = time,
                                            level = level))

并在另一个函数中使用该值：

def autoDeal(self):
    self.cancelDealTimeout()
    if not self.allReadyToPlay():
        for player in self.game.playersAll():
            if player.getUserData()['ready'] == False:
                for avatar in self.avatar_collection.get(player.serial):
                    if self.factory.verbose > 1:
                        self.message("Player %d marked as having a bugous PokerProcessingHand protocol" %  player.serial)
                        avatar.bugous_processing_hand = True
    if self.event[2] != 0:    
        self.beginTurn()
        self.update()
    else:
        reactor.callLater(10, self.beginTurn)
        self.update()

我仍然会收到错误，但却有另一个错误。

2015-02-19 22:10:11-0500 [-] Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 445, in startReactor
    self.config, oldstdout, oldstderr, self.profiler, reactor)
  File "/usr/lib/python2.6/dist-packages/twisted/application/app.py", line 348, in runReactorWithLogging
    reactor.run()
  File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1170, in run
    self.mainLoop()
  File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1179, in mainLoop
    self.runUntilCurrent()
--- <exception caught here> ---
  File "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 778, in runUntilCurrent
    call.func(*call.args, **call.kw)
  File "/usr/lib/python2.6/dist-packages/pokernetwork/pokertable.py", line 738, in autoDeal
    if self.event[2] != 0:
exceptions.AttributeError: PokerTable instance has no attribute 'event'

两个函数都在同一个模块和类中。还有什么可能是错的？

Answer 1

变量event在history2packets中定义，但不是全局变量。因此，当您在不同的函数中引用具有此名称的变量时，会引发NameError。

Answer 2

变量event在方法history2packets的本地范围内定义。如果您在另一个范围（例如函数或方法）中引用它，它将引发NameError，因为它未在该范围中定义。

解决这个问题的一个快速方法是在两个方法的顶部放置一行global event，但这通常不赞成。另一种方法是从event返回history2packets并生成autoDeal autoDeal(self, event)的参数。这意味着您可以致电：

e = history2packets(...)
# 5 lines later
autodeal(e)

另一种方法是假设history2packets和autoDeal是同一个类的2个方法。在history2packets：

中修改圆顶代码

    packets = []
    for event in history:
         self.event = event
         type = event[0]

然后，制作autoDeal

def autoDeal(self):
    self.cancelDealTimeout()
    if not self.allReadyToPlay():
        # Some lines later
    if self.event[2] != 0:  # This is the changed line  
        # Same as before

从Python数组中提取值并在另一个def中使用

2 个答案: