import json

import os.path

class Data(dict):

def __init__(self, file: str, delay_write=False):

super().__init__()

self.delay_write = delay_write

self.file = file

if os.path.exists(self.file):

self.read()

else:

self.write()

def __getitem__(self, y):

if y not in self.keys():

return None

return super().__getitem__(y)

def __setitem__(self, key, value):

super().__setitem__(key, value)

if not self.delay_write:

self.write()

def __delitem__(self, key):

super().__delitem__(key)

if not self.delay_write:

self.write()

def read(self):

with open(self.file, 'r') as f:

self.update(json.load(f))

def write(self):

with open(self.file, 'w') as f:

json.dump(self, f)