[英]Permission denied to .json file when using a JSON file as a store in Kivy app
我正在尝试将值存储在JsonStore文件中,但是单击按钮时出现以下错误;
在store_sync中,文件“ C:\\ utils \\ kivy \\ kivy \\ kivy \\ kivy \\ storage \\ jsonstore.py”的行39以fd打开(self.filename,'w'),权限为:PermissionError:[Errno 13]权限被拒绝:'storage .json'
# import Kivy
import kivy
import random
import json
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput
from kivy.storage.jsonstore import JsonStore
# my app
class MyApp(App):
# layout
def build(self):
# basic layout
layout = BoxLayout(padding=10, orientation='vertical')
self.store = JsonStore('storage.json')
# widgets
# button 1
self.btn1 = Button(text="OK")
self.btn1.bind(on_press=self.buttonClicked)
layout.add_widget(self.btn1)
# label 1
self.lbl1 = Label(text="test")
layout.add_widget(self.lbl1)
# input 1
self.txt1 = TextInput(text='', multiline=False)
layout.add_widget(self.txt1)
# return layout
return layout
# button click function
def buttonClicked(self,btn):
self.lbl1.text = "You wrote " + self.txt1.text
self.store.put('myStorage1', value1=self.txt1.text, value2='test')
# run app
if __name__ == "__main__":
MyApp().run()
使用Kivy的user_data_dir自动确定用户数据在不同设备上的存储位置,然后传递文件的完整路径进行存储。
from kivy.storage.jsonstore import JsonStore
from os.path import join
data_dir = App().user_data_dir
store = JsonStore(join(data_dir, 'storage.json'))
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