為什么以下字符串比較不起作用？我有以下代碼（我對其進行了修改以使其更簡單）。我從數據庫中檢索一個播放器，并將其添加到播放器列表中。然后，我在播放器列表上循環并嘗試找到它，即使字符串相同，比較也返回false。def findPlayer2(self, protocol, playerId):    cur = self.conn.cursor()    cur.execute("SELECT playerId, playerName, rating FROM players WHERE playerId LIKE (%s)", [playerId])    nbResult = cur.rowcount    result = cur.fetchone()    cur.close()    if nbResult > 0:        player = Player(protocol, str(result[0]), str(result[1]), result[2])        self.players.append(player)    for player in self.players:        id1 = str(player.playerId)        id2 = str(playerId)        print type(id1)        print type(id2)        print "Comparing '%s' with '%s'" % (id1, id2)# HERE IS THE COMPARISON        if id1 == id2:            print "Equal! Player found!"            return player        else:            print "Not equal :("給出以下結果：<type 'str'><type 'str'>Comparing '11111111' with '11111111'Not equal :(