Python爬蟲解析多級嵌套json

最近剛接觸Python爬蟲，正好最近肺炎在全國蔓延，所以準備從網站爬取肺炎實時數據，并解析自己想要的數據。獲取json數據網址為 https://m.look.360.cn/events/feiyan

爬取網址：

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")

獲取json文件后發現為嵌套格式，具體格式大家可以打開上方網址查看：

{

"data":[

{

"data":{省份}

"citys":[

{城市}{}.....

]

}

{

"data":{省份}

"citys":[

{城市}{}.....

]

}

"country":[

{其他國家}

]

]

}

解析數據

因為我只想獲取各個城市的名稱、感染人數、治愈人數和死亡人數，所以需要嵌套循環來獲取并逐個輸出。代碼如下：

省級數據獲取：

provincename = state['data'][i]['data']['provinceName']

confirmedCount = state['data'][i]['data']['confirmedCount']

curedCount = state['data'][i]['data']['curedCount']

deadCount = state['data'][i]['data']['deadCount']

城市數據獲取：

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']

國外城市數據獲取：

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。

輸出效果：

總結

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