Python requests和easygui模块的结合

Python requests和easygui模块的综合应用

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复习回顾

1. urllib模块的使用
2. json数据与dict的转换
3. easygui模块的常用函数

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本节新知

1. requests模块的安装

   CMD

   pip install requests

2. requests模块的使用
   requests模块是对urllib模块的二次封装，使用更加方便

   PYTHON

   import requests
   url1 = "http://www.baidu.com"
   req = requests.get(url1)
   req.encoding = "utf-8"
   print(req.text)

3. requests模块与urllib模块的区别
   requests模块通过构建的req请求的text属性来查看网页内容，urllib模块通过调用构建的req请求的read()函数来返回网页内容

   PYTHON

   import urllib.request
   import requests
   url = "https://www.baidu.com"
   req1 = urllib.request.urlopen(url)
   html_content1 = req1.read().decode("utf8")
   
   req2 = requests.get(url)
   html_content2 = req2.text

4. 使用easygui模块进行显示与提取数据

   PYTHON

   import easygui as eg
   city = eg.choicebox("请选择要查询城市的疫情数据：", "疫情查询系统", ["河南，郑州"], [黑龙江, 哈尔滨])
   for city_detail in citylist:
       if city = city_detail["city"]:
          eg.msgbox(str(city_detail), "疫情查询系统")

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课后作业

用requests模块和easygui模块完善疫情数据查询程序