服务员警告 434 HTTPTooManyRequests

当您收到HTTP错误代码“429 Too Many Requests”时，这意味着您的请求频率超过了服务器允许的限制。以下是一些解决方法的示例代码：

1. 增加请求之间的延迟时间：

import time
import requests

url = "https://example.com/api"
headers = {"User-Agent": "Your User Agent"}

for i in range(10):
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        # 处理响应数据
        print(response.json())
    else:
        if response.status_code == 429:
            print("Too Many Requests. Waiting for 5 seconds...")
            time.sleep(5)  # 延迟5秒后重试
        else:
            print("Error:", response.status_code)

2. 实现指数退避算法：

import time
import random
import requests

url = "https://example.com/api"
headers = {"User-Agent": "Your User Agent"}

retry_delay = 1  # 初始重试延迟时间为1秒
max_delay = 60  # 最大重试延迟时间为60秒

for i in range(10):
    response = requests.get(url, headers=headers)
    if response.status_code == 200:
        # 处理响应数据
        print(response.json())
    else:
        if response.status_code == 429:
            retry_delay = min(2 * retry_delay, max_delay)
            print("Too Many Requests. Waiting for", retry_delay, "seconds...")
            time.sleep(retry_delay)  # 延迟重试
            retry_delay = random.uniform(0.5, retry_delay)  # 引入随机性以防止请求同步
        else:
            print("Error:", response.status_code)

3. 使用限流器（Rate limiter）控制请求速率：

import time
import requests
from ratelimiter import RateLimiter

url = "https://example.com/api"
headers = {"User-Agent": "Your User Agent"}

limiter = RateLimiter(max_calls=10, period=60)  # 在60秒内最多允许10次请求

for i in range(10):
    with limiter:
        response = requests.get(url, headers=headers)
        if response.status_code == 200:
            # 处理响应数据
            print(response.json())
        else:
            print("Error:", response.status_code)

这些示例代码演示了几种常见的解决方法，您可以根据自己的需求和情况进行调整和改进。请注意，在实际应用中，您可能还需要处理其他类型的错误和异常情况。