将学习的Python爬虫知识简单做个案例实战，并使用matplotlib将温度做了个图：

import requests
from bs4 import BeautifulSoup
import matplotlib.pyplot as plt
import datetime

All_Data = []

def send_parse_urls():
    url = "http://www.weather.com.cn/weather15d/101090101.shtml"
    header = {
        "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67"}
    data = requests.get(url=url, headers=header)
    data.encoding = "utf-8"

    # print(data.text)

    soup = BeautifulSoup(data.text, "html.parser")
    weekData = soup.find(name="ul", attrs={"class": "t clearfix"})
    lis = weekData.find_all(name="li")

    for oneDay in lis:
        date = oneDay.find_all(name="span", attrs={"class": "time"})[0].text
        wea = oneDay.find_all(name="span", attrs={"class": "wea"})[0].text
        wind = oneDay.find_all(name="span", attrs={"class": "wind"})[0].text
        wind1 = oneDay.find_all(name="span", attrs={"class": "wind1"})[0].text
        tem = oneDay.find_all(name="span", attrs={"class": "tem"})[0].text

        # print(date[0].text)
        # print(wea[0].text)
        All_Data.append({"date": date, "wea": wea, "tem": tem, "wind": wind, "wind1": wind1})

    return All_Data


def main():
    maxD = []
    minD = []
    today = datetime.datetime.now().day
    days = [today,today+1,today+2,today+3,today+4,today+5,today+6,today+7]
    wea_data = send_parse_urls()
    for oneDayWea in wea_data:
        tem = oneDayWea["tem"]
        maxTem = tem.split("/")[0].replace("℃","")
        minTem = tem.split("/")[1].replace("℃","")
        minD.append(int(minTem))
        maxD.append(int(maxTem))

    plt.title("SJZ Weather")
    plt.xlabel("date")
    plt.ylabel("tem")
    # ax = plt.gca()
    # ax.invert_yaxis()
    plt.plot(days,maxD,"r")
    plt.plot(days,minD,"b")

    #plt.savefig('testblueline.jpg')
    plt.show()

if __name__ == '__main__':
    main()