测试字典中的键

Question

我正在尝试使用 Pyautogui 为名为“Graal Online Classic”的 MMO 创建一个机器人。它会读取向他们发送消息的玩家的“PM”，然后以适当的响应进行回复。它还将截取玩家姓名的屏幕截图，将其转换为带有 tesseract 的字符串，并将其存储在字典中（并且还存储该特定玩家在机器人的响应层次结构中的位置）并使用它来确定玩家是否已发送消息他们之前。

def player_id(name_coords, option): # Indentifies person who messaged and depending on if this person has messaged before changes response
    players = {} # Used to store players names and where in the response is
    keys = players.keys()

    image = pyautogui.screenshot('name_test.png', region = name_coords) # Names are screenshots 
    name_image = str(pytesseract.image_to_string(Image.open('name_test.png')))
    print(name_image)
    for name_image in keys:
        print("User is previous user.")
        if players[name_image] == None:
            players[name_image] = option
        else:
            players[name_image] = players[name_image] + option
        return players[name_image]
    else:
        print("User was not previously found, adding to dictionary.")
        players[name_image] = None
        print(players.keys())
        print(players)

问题源于上面的函数。当它找到以前给他们发过消息的人时，应该去 if 语句，但无论如何，else 语句都会执行。当玩家第二次向他们发送消息时，我打印玩家中的值，但对于 name_image 中的键：仍然返回 false。

如果需要，这里是完整代码https://pastebin.com/haJRfqJD

这是程序运行 3 条消息的日志

None
(454, 222)
Found a waiting message
Found an open message
1003 424
Player messaged 1
1
I hate sand
User was not previously found, adding to dictionary.
dict_keys(['I hate sand'])
{'I hate sand': None}
The bounty quest allows you to hunt mobs for cash! Location: Castle, steward's room(to the right in the throne room) [PM 1 for specifics, PM 2 for TIPS, PM 3 for possible bounties]
Replying...
(454, 222)
Found a waiting message
Found an open message
1003 424
Player messaged 1
1
I hate sand
User was not previously found, adding to dictionary.
dict_keys(['I hate sand'])
{'I hate sand': None}
The bounty quest allows you to hunt mobs for cash! Location: Castle, steward's room(to the right in the throne room) [PM 1 for specifics, PM 2 for TIPS, PM 3 for possible bounties]
Replying...
(454, 222)
Found a waiting message
Found an open message
1003 424
Player messaged 1
1
I hate sand
User was not previously found, adding to dictionary.
dict_keys(['I hate sand'])
{'I hate sand': None}
The bounty quest allows you to hunt mobs for cash! Location: Castle, steward's room(to the right in the throne room) [PM 1 for specifics, PM 2 for TIPS, PM 3 for possible bounties]
Replying...

Answer 1

这里不需要 for 循环。这就是使用字典的全部意义——避免昂贵的 O(N) 查找。字典查找速度很快。用

替换你的for循环

name = players.get(name_image)
if name:    
    # your variable naming is totally unclear. I **think** this is what you want
    players[name] = option
    return players[name]
else:
    print("User was not previously found, adding to dictionary.")
    players[name_image] = None
    print(players.keys())
    print(players)

请注意，在您的原始 cdoe 中，您正在定义一个 name_image，如下所示：

name_image = str(pytesseract.image_to_string(Image.open('name_test.png')))

但是那个变量在 for 循环中被覆盖了。