Python3 XML 获取雅虎天气的实现方法_Python

Python3 XML 获取雅虎天气的实现方法

2021-01-11 00:13mabing993 Python

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))