from tinydb import TinyDB, Query
db = TinyDB('db.json')
User = Query()
db = db.table('table_name')
db.insert({'name': 'John', 'age': 22})
db.search(User.table_name.name == 'John')

# save
db.search(User.name == 'John')
db.insert({'name': 'John', 'age': 22})
db.search(User.name == 'John')