个人博客地址https://nfreak-man.cn
最近刚接触Python爬虫，正好最近肺炎在全国蔓延，所以准备从网站爬取肺炎实时数据，并解析自己想要的数据。获取json数据网址为 https://m.look.360.cn/events/feiyan

爬取网址：

def main():
    url='https://m.look.360.cn/events/feiyan'
    headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) 		    AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36 QIHU 360EE'}
    parse_page(url)

解析并保存json格式文件：

state = json.loads(response.content)
with open("feiyan.json", "w",encoding='utf-8') as f:
	f.write(json.dumps(state,indent=2,ensure_ascii=False))
    print("保存成功")

获取json文件后发现为嵌套格式，具体格式大家可以打开上方网址查看：

{
 "data":[
 		{
 		 "data":{省份}
         "citys":[
         		  {城市}{}.....
         		 ]		 
 		}
 		{
 		 "data":{省份}
         "citys":[
         		  {城市}{}.....
         		 ]		 
 		}
 "country":[
 			{其他国家}
 		   ]	
 		]
}

解析数据

因为我只想获取各个城市的名称、感染人数、治愈人数和死亡人数，所以需要嵌套循环来获取并逐个输出。代码如下：

省级数据获取：

provincename = state['data'][i]['data']['provinceName'] 
confirmedCount = state['data'][i]['data']['confirmedCount']
curedCount = state['data'][i]['data']['curedCount'] 
deadCount = state['data'][i]['data']['deadCount'] 

城市数据获取：

cityName = state['data'][i]['cities'][j]['cityName']
diagnosed = state['data'][i]['cities'][j]['diagnosed']
cured = state['data'][i]['cities'][j]['cured']
died = state['data'][i]['cities'][j]['died']

国外城市数据获取：

countryname = state['country'][c]['provinceName']
diagnosed = state['country'][c]['diagnosed']
cured = state['country'][c]['cured']
died = state['country'][c]['died']

以上就是嵌套json解析格式。

输出效果：

源码地址：github