为什么python代码正确，但是打印不出来值呢

代码如下：为什么我打印最高温度max在控制台上是一个“-”号呢？
我在mysql里面改了max类型为varchar(10)应该够了啊，到底是出什么问题了

from bs4 import BeautifulSoup
import requests
import pymysql

#conn = pymysql.connect(host='localhost',user='root',passwd='789456',db='weather',port=3306,charset='utf8')
#cursor = conn.cursor()


def get_temperature(url):
    headers = {
        'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'}  # 设置头文件信息
    response = requests.get(url, headers=headers).content  # 提交requests get 请求
    soup = BeautifulSoup(response, "lxml")  # 用Beautifulsoup 进行解析

    conmid = soup.find('div', class_='conMidtab')
    conmid2 = conmid.findAll('div', class_='conMidtab2')

    for info in conmid2:
        tr_list = info.find_all('tr')[2:]  # 使用切片取到第三个tr标签
        for index, tr in enumerate(tr_list):  # enumerate可以返回元素的位置及内容
            td_list = tr.find_all('td')
            if index == 0:
                province_name = td_list[0].text.replace('\n', '')  # 取每个标签的text信息，并使用replace()函数将换行符删除
                city_name = td_list[1].text.replace('\n', '')
                weather = td_list[5].text.replace('\n', '')
                wind = td_list[6].text.replace('\n', '')
                max = td_list[4].text.replace('\n', '')
                min = td_list[7].text.replace('\n', '')
                print(province_name)
            else:
                city_name = td_list[0].text.replace('\n', '')
                weather = td_list[4].text.replace('\n', '')
                wind = td_list[5].text.replace('\n', '')
                max = td_list[3].text.replace('\n', '')
                min = td_list[6].text.replace('\n', '')

            print(city_name, weather, wind, max, min)
            #cursor.execute('insert into 你新建的表的名字(city,weather,wind,max,min) values(%s,%s,%s,%s,%s)',
                          # (city_name, weather, wind, max, min))


if __name__ == '__main__':
    urls = ['http://www.weather.com.cn/textFC/hb.shtml',
            'http://www.weather.com.cn/textFC/db.shtml',
            'http://www.weather.com.cn/textFC/hd.shtml',
            'http://www.weather.com.cn/textFC/hz.shtml',
            'http://www.weather.com.cn/textFC/hn.shtml',
            'http://www.weather.com.cn/textFC/xb.shtml',
            'http://www.weather.com.cn/textFC/xn.shtml']
    for url in urls:
        get_temperature(url)
    #conn.commit()

这是结果

你自己看网站，它网站最高温就是-