AirBnB Clone - The Console
HolBnB clone Welcome to the AirBnB clone project! Getting Started
What’s a command interpreter?
Do you remember the Shell? It’s exactly the same but limited to a specific use-case. In our case, we want to
be able to manage the objects of our project:
Create a new object (ex: a new User or a new Place)
Retrieve an object from a file, a database etc…
Do operations on objects (count, compute stats, etc…)
Update attributes of an object
Destroy an object
Learning Objectives General
How to create a Python package
How to create a command interpreter in Python using the cmd module
What is Unit testing and how to implement it in a large project
How to serialize and deserialize a Class
How to write and read a JSON file
How to manage datetime
What is an UUID
What is *args and how to use it
What is **kwargs and how to use it
How to handle named arguments in a function
Execution
Your shell should work like this in interactive mode:
$ ./console.py (hbnb) help
EOF help quit
(hbnb) (hbnb) (hbnb) quit $
But also in non-interactive mode: (like the Shell project in C)
$ echo "help" | ./console.py
(hbnb)
EOF help quit (hbnb) $ $ cat test_help help $ $ cat test_help | ./console.py (hbnb)
EOF help quit (hbnb) $
Usage Examples
Launching the console
$ ./console.py (hbnb)
Creating a new object
(hbnb) create ** class name missing ** (hbnb) create User 670265eb-5982-489e-8b92-2dff054f0776
Show an object
(hbnb) show User ** instance id missing ** (hbnb) show User 670265eb-5982-489e-8b92-2dff054f0776 [User] (670265eb-5982-489e-8b92-2dff054f0776) {'created_at': datetime.datetime(2020, 2, 19, 18, 8, 58, 458246), 'id': '670265eb-5982-489e-8b92-2dff054f0776', 'updated_at': datetime.datetime(2020, 2, 19, 18, 8, 58, 458261)}
Update an object
(hbnb) all ["[User] (70f71c16-962b-48ad-9df8-9203fe23d612) {'created_at': datetime.datetime(2020, 2, 19, 18, 11, 32, 341144), 'id': '70f71c16-962b-48ad-9df8-9203fe23d612', 'updated_at': datetime.datetime(2020, 2, 19, 18, 11, 32, 341161)}"] (hbnb) update ** class name missing ** (hbnb) update User ** instance id missing ** (hbnb) update User 70f71c16-962b-48ad-9df8-9203fe23d612 ** attribute name missing ** (hbnb) update User 70f71c16-962b-48ad-9df8-9203fe23d612 Age "20" (hbnb) all ["[User] (70f71c16-962b-48ad-9df8-9203fe23d612) {'Age': 20, 'created_at': datetime.datetime(2020, 2, 19, 18, 11, 32, 341144), 'id': '70f71c16-962b-48ad-9df8-9203fe23d612', 'updated_at': datetime.datetime(2020, 2, 19, 18, 13, 9, 937933)}"] (hbnb)
Destroy an object
(hbnb) destroy ** class name missing ** (hbnb) destroy User ** instance id missing ** (hbnb) destroy User 670265eb-5982-489e-8b92-2dff054f0776 (hbnb)