如何使用Python读取json文件夹数据? [英] How to read json folder data using Python?

问题描述

我想使用Python 3.7.2获取json文件夹的数据.

I want to get the data of json folders using Python 3.7.2.

这是我的json文件:

This is my json file:

{"device": 
  [
    {"name": "device1", "status": 0},
    {"name": "device2", "status": 1},
    {"name": "device2", "status": 1}
  ]
}

对于我的项目，我需要以下变量:

For my project I need following variables:

• 列表中收集的所有设备的变量:

• variable of all devices gathered in a list:

 devices = ["device1", "device1", "device1"]  

保存在不同变量中的设备的状态:

status of devices saved in different variables:

 status_device1 = 0
 status_device2 = 1
 status_device3 = 1

可以更改json文件的结构，但是它只能是一个json文件，所以我需要类似的东西:

jdevices = getDevices(json_data)             | Output: {'device1', 'device2', 'device3'}

和:

jstatus = getStatus(json_data, "device1")    | Output: 0 

推荐答案

import json

class DeviceHelper:

    def __init__(self, json_file):
        """open json file and load json content"""
        with open(json_file, 'rb') as file:
            self.device_info = json.load(file)

    def get_device_status(self, name):
        """loop over the divices list and compare"""
        for device in self.device_info.get('device'):
            if device.get('name') == name:
                return device.get('status')
        return 'Lol no device found'

    def get_devices(self):
        return [device.get('name') for device in self.device_info.get('device')]

# path to json file
device_info = DeviceHelper('devices.json')

device_info.get_device_status('device2')
>>> 1
device_info.get_devices()
>>> ['device1', 'device2', 'device2']

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