JSON 请求从字典中获取特定值 Python

Question

我正在尝试使用来自 YouTube 的这段代码来检测 Discord 聊天中的特定用户名。如果用户名是，请说“123”，然后将其打印为 "Found: 123"。尝试了各种方法都没有用。

这是我的完整代码：

import websocket 
import json
import threading
import time

def send_json_request(ws, request):
    ws.send(json.dumps(request))

def receive_json_response(ws):
    response = ws.recv()
    if response:
        return json.loads(response)

def heartbeat(interval, ws):
    print("Heartbeat begin")
    while True:
        time.sleep(interval)
        heartbeatJSON = {
            "op": 1,
            "d": "null"
        }
        send_json_request(ws, heartbeatJSON)
        print("Heartbeat sent")

ws = websocket.WebSocket()
ws.connect('wss://gateway.discord.gg/?v=6&encording=json')
event = receive_json_response(ws)

heartbeat_interval = event['d']['heartbeat_interval'] / 1000
threading._start_new_thread(heartbeat, (heartbeat_interval, ws))

token = "tokenhere"
payload = {
    'op': 2,
    "d": {
        "token": token,
        "properties": {
            "$os": "windows",
            "$browser": "chrome",
            "$device": "pc"
        }
    }
}

send_json_request(ws, payload)

while True:
    event = receive_json_response(ws)
    try:
        print(f"{event['d']['author']['username']}: {event['d']['content']}")
        print(event)
        op_code = event('op')

        for specific in event:
            if specific['d']['author']['username'] == "123":
                print(f'Found: {specific}')
            else:
                print("Not found")

        if op_code == 11:
            print("Heartbeat received")
    except:
        pass

无效的代码（但没有错误）：

for specific in event:
            if specific['d']['author']['username'] == "123":
                print(f'Found: {specific}')
            else:
                print("Not found")

好像哪里不对？谢谢。

Answer 1

我不应该使用 for 循环。我尝试了下面的代码，它起作用了。这是一个如此简单的错误：

specific = event['d']['author']['username']
if specific == "123":
    print(f"Found")
else:
    print("Not found")

JSON 请求从字典中获取特定值 Python

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