将数据添加到 JSON 文件
Adding data to JSON file
我正在使用 python 使用 RaspberryPi。我想将数据从温度传感器发送到 JSON 文件。但是,我不确定该怎么做。我真的很感激在这个问题上的一些指导。谢谢!
这是我的代码:
import grovepi
import math
from time import sleep
from grove_rgb_lcd import *
sensor = 4
blue = 0
white = 1
setRGB(0,255,0)
while True:
try:
[temp,humidity] = grovepi.dht(sensor,blue)
if math.isnan(temp) == False and math.isnan(humidity) == False:
print("temp = %.02f C humidity =%.02f%%"%(temp, humidity))
t = str(temp)
h = str(humidity)
setText("Temp:" + t + "C\n" + "Humidity :" + h + "%")
except (IOError, TypeError) as e:
print(str(e))
setText("")
except KeyboardInterrupt as e:
print(str(e))
setText("")
break
sleep(0.05)
您可以为此使用 json module,我在下面列出了显示读取和写入 JSON 文件的函数:
import json
def read_json(file_path:str) -> dict:
"""Takes in a json file path and returns it's contents"""
with open(file_path, "r") as json_file:
content = json.load(json_file)
return content
def store_json(data:dict, file_path:str):
"""Takes in a python dict and stores it as a .json file"""
with open(file_path, "w") as json_file:
json.dump(data, json_file)
确保将字典传递给 store_json()
,否则会出错。
在你的情况下,我认为你想要:
data = {}
data["temp"] = t
data["humidity"] = h
store_json(data, "path/to/file.json")
我正在使用 python 使用 RaspberryPi。我想将数据从温度传感器发送到 JSON 文件。但是,我不确定该怎么做。我真的很感激在这个问题上的一些指导。谢谢!
这是我的代码:
import grovepi
import math
from time import sleep
from grove_rgb_lcd import *
sensor = 4
blue = 0
white = 1
setRGB(0,255,0)
while True:
try:
[temp,humidity] = grovepi.dht(sensor,blue)
if math.isnan(temp) == False and math.isnan(humidity) == False:
print("temp = %.02f C humidity =%.02f%%"%(temp, humidity))
t = str(temp)
h = str(humidity)
setText("Temp:" + t + "C\n" + "Humidity :" + h + "%")
except (IOError, TypeError) as e:
print(str(e))
setText("")
except KeyboardInterrupt as e:
print(str(e))
setText("")
break
sleep(0.05)
您可以为此使用 json module,我在下面列出了显示读取和写入 JSON 文件的函数:
import json
def read_json(file_path:str) -> dict:
"""Takes in a json file path and returns it's contents"""
with open(file_path, "r") as json_file:
content = json.load(json_file)
return content
def store_json(data:dict, file_path:str):
"""Takes in a python dict and stores it as a .json file"""
with open(file_path, "w") as json_file:
json.dump(data, json_file)
确保将字典传递给 store_json()
,否则会出错。
在你的情况下,我认为你想要:
data = {}
data["temp"] = t
data["humidity"] = h
store_json(data, "path/to/file.json")