1 # -*-coding: utf-8 -*-
2 import urllib
3 import urllib.request as request
4 import urllib.error as error
5 import json
6
7 #天气预报查询
8 def main():
9 api_url = 'http://apis.juhe.cn/simpleWeather/query'
10 params_dict = {
11 "city": "广州",
12 "key": "123456789"
13 }
14 # 将dict类型参数转化为query_string格式（key=value&key=value），并且将中文转码，最终会转换为bytes(字节流）类型
15 # city=%E5%B9%BF%E5%B7%9E&key=123456789
16 params = urllib.parse.urlencode(params_dict)
17 try:
18 # urllib.request.Request()要求传递的data为bytes(字节流）类型
19 # 返回一个url请求对象
20 # <urllib.request.Request object at 0x0000000002DFF588>
21 req = request.Request(api_url, params.encode())
22 # urlopen 返回一个类文件对象
23 # <http.client.HTTPResponse object at 0x0000000002E09488>
24 response = request.urlopen(req)
25 content = response.read()
26 if content:
27 try:
28 # json.loads()将json字符串转换为字典类型
29 result = json.loads(content)
30 print(result)
31 error_code = result['error_code']
32 if (error_code == 0):
33 temperature = result['result']['realtime']['temperature']
34 print("温度：%s" % temperature)
35 except Exception as e:
36 print("解析结果异常：%s" % e)
37
38 except error.HTTPError as err:
39 print(err)
40 except error.URLError as err:
41 print(err)
42
43 if __name__ == '__main__':
44 main()