Question

我正在处理一系列游戏，并想知道哪个玩家使用python赢得了大多数游戏。我认为多重（C ++）类型的数据结构可以很容易，因为每个键都是唯一的，但它会计算在dict中推送项目的次数。我在搜索中没有找到任何关于它们的内容后开始自己实现它。

是否有一种更简单的方法可以将dict值设置为添加键的次数而不是像我一样使用列表？

## logFiles is just a list of json files for each game.
winnerList = []
winnerDict = {}
if len(logFiles):
   for logFile in logFiles:
      jsonData = json.load(open("logs/" + logFile, 'r'))
      winnerList.append(str(jsonData[6]['winner']))
   for winner in winnerList:
      winnerDict[winner] = winnerList.count(winner)

Answer 1

您正在寻找collections.Counter：

import collections,json,os.path
winners = collections.Counter()
for logFile in logFiles:
    with open(os.path.join("logs", logFile), 'r') as jsonf:
        jsonData = json.load(jsonf)
    winner = str(jsonData[6]['winner'])
    winners[winner] += 1
winnerList = list(winners.keys())
bestPlayers = winners.most_common()

Answer 2

您可以使用dict.setdefault

winnerDict = {}
if len(logFiles):
    for logFile in logFiles:
        jsonData = json.load(open("logs/" + logFile, 'r'))
        winner = str(jsonData[6]['winner'])
        winnerDict.setdefault(winner,0)
        winnerDict[winner] += 1

将dict值设置为插入python的次数？

2 个答案: