mydb.py

import json

class Database:
    # to insert data in to json
    def add_data(self,name,email,password):

        with open('db.json','r') as rf:
            database = json.load(rf)

        if email in database:
            return 0
        else:
            if email == '':
                return 0
            else:
                database[email] = [name,password]

                with open('db.json','w') as  wf:
                    json.dump(database,wf)

                return 1

    # to check user details in json
    def search(self,email,password):

        with open('db.json','r') as rf:
            database = json.load(rf)
            if email in database:
                if database[email][1] == password:
                    return 1

                else:
                    0
            else:
                0