import json

from xml.parsers.expat import ParserCreate

from urllib import request

class DefaultSaxHandler(object):

    def __init__(self):

        self.pointer = ''

        self.city = ''

        self.forecast = []

    def start_element(self, name, attrs):

        self.pointer = name

        if name == 'cast':

            self.weather = {

                'date': '',

                'high': '',

                'low': ''

            }

    def end_element(self, name):

        if name == 'cast':

            self.forecast.append(self.weather)

        self.pointer = ''

    def char_data(self, text):

        if self.pointer == 'province':

            self.city = text

        elif self.pointer == 'date':

            self.weather['date'] = text

        elif self.pointer == 'daytemp_float':

            self.weather['high'] = text

        elif self.pointer == 'nighttemp_float':

            self.weather['low'] = text

    def toJSON(self):

        return {'city': self.city, 'forecast': self.forecast}

def parseXml(xml_str):

    print(xml_str)

    handler = DefaultSaxHandler()

    parser = ParserCreate()

    parser.StartElementHandler = handler.start_element

    parser.EndElementHandler = handler.end_element

    parser.CharacterDataHandler = handler.char_data

    parser.Parse(xml_str)

    return handler.toJSON()

# ceshi

KEY = '2a0408d476372dda05c5e0fcee590afc'

URL = 'https://restapi.amap.com/v3/weather/weatherInfo?city=110101&key=%s&output=xml&extensions=all' % KEY

with request.urlopen(URL, timeout=4) as f:

    data = f.read()

result = parseXml(data.decode('utf-8'))

formatted_result = json.dumps(result,indent=4,sort_keys=True)

print(formatted_result)

assert result['city'] == '北京'

• print('OK!')