杭州七日天气预报数据分析

import requests as r
from bs4 import BeautifulSoup
import matplotlib.pyplot as p
def gethtmltext(url):
try:
a=r.get(url,timeout=30)
a.raise_for_status()
r.encoding=a.apparent_encoding
return a.text
except:
return \'\'
url=\'http://www.weather.com.cn/weather/101210101.shtml\'
html=gethtmltext(url)
soup=BeautifulSoup(html,\'html.parser\')
t_high=[]
t_low=[\'17\']
for tr in soup.find_all(\'p\',{\'class\':\'tem\'}):
x=tr.get_text()
t_high.append(eval(x[1:3]))
t_low.append(x[5:7])
p.xlabel(\'时间（5月x日）\',fontproperties=\'SimHei\')
p.ylabel(\'温度（单位：℃）\',fontproperties=\'SimHei\')
p.title(\'杭州未来一周温度预测\',fontproperties=\'SimHei\')
x=range(10,17)
m=[24,28,28,29,25,30,29]
n=[17,17,17,18,19,21,20]
p.plot(x,m,marker=\'^\')
p.plot(x,n,marker=\'^\')
p.show()