import re,requests
def parse_response(url):
    header = {
        'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) '
                      'Chrome/63.0.3239.132 Safari/537.36 '
    }
    response = requests.get(url, headers=header, timeout=2)
    response.encoding = 'UTF-8'
    html = response.text
    pattern = re.compile('<title>(.*?)</title>', re.S)
    items = re.findall(pattern, html)
    print(items[0])

    return items

if __name__ == "__main__":
    url=input('输入网址：')
    parse_response(url)