用于检查url是否存在的Python脚本失败，并出现HTTPConnectionPool错误

import requests

def check_url(url):
    try:
        response = requests.head(url)
        if response.status_code == 200:
            return True
        else:
            return False
    except requests.exceptions.RequestException as e:
        print("URL检查出错：", e)
        return False

# 调用示例
url = "https://www.example.com"
result = check_url(url)
if result:
    print("URL存在")
else:
    print("URL不存在")

import requests

session = requests.Session()
adapter = requests.adapters.HTTPAdapter(pool_connections=100, pool_maxsize=100)
session.mount('http://', adapter)
session.mount('https://', adapter)

import requests
import time

def check_url(url):
    try:
        response = requests.head(url)
        if response.status_code == 200:
            return True
        else:
            return False
    except requests.exceptions.RequestException as e:
        print("URL检查出错：", e)
        return False

# 调用示例
url = "https://www.example.com"
result = check_url(url)
if result:
    print("URL存在")
else:
    print("URL不存在")
    time.sleep(1)  # 延迟1秒后再进行下一次检查