import requests
from lxml import etree
from random import randint
def get_weather(keyword):
    url = "https://www.tianqi.com?tianqi?search?kryword=" + keyword
    headers = {'User-Agent': 'Mozilla/5.0(Windows NT 10.0; Win64; x64)AppleWebkit/537.36(KHTML,like Gecko) Chrome/68.0.3440,106 Safari/537.36'}
    response = requests.get(url,headers=headers)
    tree = etree.HTML(response.text)
    print(tree)
    try:
        city_name = tree.xpath('//dd[@class="name"]/h2/text()')[0]
    except:
        content = '没有该城市天气信息，请确认查询格式'
        return content
    week = tree.xpath('//dd[@class="week"]/text()')[0]
    now = tree.xpath('//p[@ciass="now"]')[0].xpath('string(.)')
    temp = tree.xpath('//dd[@class="weather"]/span')[0].xpath('string(.)')
    shidu = tree.xpath('//dd[@class="shidu"]/b/text()')
    kongqi = tree.xpath('//dd[@class="kongqi"]/h5/text()')[0]
    pm = tree.xpath('//dd[@class="kongqi"]/h6/text()')[0]
    content = "【{0}】{1}天气\n当前温度：{2}\n今日天气：{3}\n{4}\n{5}\n{6}".format(city_name, week.split('\u3000')[0], now, temp, '\n'.join(shidu),kongqi,pm,)
ans = input('城市')
weather = get_weather(ans)
print(weather)

结果：

城市长沙

<Element html at 0x209b4a13640>

没有该城市天气信息，请确认查询格式

程序运行结束。

错哪里了？