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Python3 XML 获取雅虎天气的实现方法
2021-04-27 76人围观 0条评论
简介下面小编就为大家分享一篇Python3 XML 获取雅虎天气的实现方法,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧

    参考廖雪峰的Python教程,实现Linux Python3获取雅虎天气

    #!/usr/bin/env python3
    # coding: utf-8
    import os
    from datetime import datetime
    from urllib import request 
    from xml.parsers.expat import ParserCreate 
    file_name = "weather.txt"
    for root, dirs, files in os.walk("."):
     if file_name in files:
      os.remove(os.path.join(root, file_name))
    def yahoo_weather(data):
     flag = False
     weather = {"city": "", "pubdate": "", "forecast": []}
     def start_element(name, attrs):
      if name == "yweather:location":
       weather["city"] = weather["city"] + attrs["city"]
       weather["city"] = weather["city"] + " " + attrs["country"]
      if name == "yweather:forecast":
       forecast = {}
       forecast["date"] = attrs["date"]
       forecast["day"] = attrs["day"]
       forecast["high"] = attrs["high"]
       forecast["low"] = attrs["low"]
       forecast["text"] = attrs["text"]
       weather["forecast"].append(forecast)
      if name == "pubDate":
       nonlocal flag
       flag = True
      
     def char_data(text):
      nonlocal flag
      if flag:
       weather["pubdate"] = text
       flag = False
     parser = ParserCreate()
     parser.StartElementHandler = start_element
     parser.CharacterDataHandler = char_data
     parser.Parse(data)
     return weather
    def print_weather(weather):
     with open(file_name, "a") as f:
      s = "City: %s\nPub date: %s" %(weather["city"], weather["pubdate"])
      print("%s" %(weather["city"]))
      f.write(s + "\n")
      for forecast in weather["forecast"]:
       date = datetime.strptime(forecast["date"], "%d %b %Y").strftime("%Y-%m-%d")
       s = "Date: %s High: %s Low: %s Weather: %s" %(date, forecast["high"], forecast["low"], forecast["text"])
       f.write(s + "\n")
      f.write("\n")
    citys = ["2151330", "2151849", "44418", "615702", "2514815"]
    for city in citys:
     url = "https://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20weather.forecast%20where%20woeid%20%3D%20"
     url = url + city
     url = url + "&format=xml"
     with request.urlopen(url, timeout=4) as f:
      weather = yahoo_weather(f.read())
      print_weather(weather)
    print("weather conditions has written to %s" %(file_name))

    以上这篇Python3 XML 获取雅虎天气的实现方法就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持脚本之家。

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