功能：
输入城市名称，得到该城市天气以及天气更新时间，还可根据需要决定是否查看更多天气信息。
效果：
完整代码：
import pandas as pd
import requests
import re
#创建一个字典存储中国天气网城市代码
def createCityCode():
fh = r'text\中国天气网城市代码.csv'
data = pd.read_csv(fh,engine='python')
data = data.dropna()
# print(data)
cityCodeDict = {}
for name,code in zip(data['城市名称'],data['城市代码']):
cityCodeDict[name] = code
# print(cityCodeDict)
return cityCodeDict
#天气爬虫
def spider(url,headers):
response = requests.get(url,headers)
content = response.content.decode('utf-8')
pat_weather = re.compile('<input type="hidden" id="hidden_title" value="(.*?)" />')
pat_up_time = re.compile('<input type="hidden" id="fc_24h_internal_update_time" value="(.*?)"/>')
weather = pat_weather.findall(content)
up_time = pat_up_time.findall(content)
print(weather[0])
print('更新时间：',up_time[0])
ask_ok = input('是否深入查看（Y/N）：')
if ask_ok == 'Y' or ask_ok == 'y':
pat_more_weather = re.compile('<li class="li. hot".*?\n<i></i>.<span>(.*?)</span>\n<em>(.*?)</em>\n<p>(.*?)</p>.*?\n</li>',re.S)
more_weather = pat_more_weather.findall(content)
for item in more_weather:
if item[1] != '减肥指数':
print(item[1],':',item[0],',',item[2])
else:
print(item[1],':',item[2])
def main():
cityCodeDict = createCityCode()
headers = {
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_2) AppleWebKit/604.4.7 (KHTML, like Gecko) Version/11.0.2 Safari/604.4.7'
}
while (True):
try:
cityName = input('请输入城市名称(按q/Q键退出)：')
if cityName == 'q' or cityName == 'Q':
break
# print(cityCodeDict[cityName])
cityCode = cityCodeDict[cityName] #得到城市代码
url = 'http://www.weather.com.cn/weather1d/%d.shtml' % cityCode #得到城市天气网址
# print(url)
spider(url,headers)
except:
print('未查到%s城市，请重新输入：'%cityName)
if __name__ == '__main__':
main()