mirror of https://github.com/01-edu/public.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
64 lines
2.0 KiB
64 lines
2.0 KiB
2 years ago
|
## object_to_json
|
||
|
|
|
||
|
|
A lot of information on the web are shared in the JSON format. This exercise will be about transforming object to JSON and vice-versa.
|
||
|
|
|
||
|
|
### Instructions
|
||
|
|
|
||
|
|
You just landed a new job, congrats! Your new task is to build two functions to allow new users to register to your new shiny website.
|
||
|
|
|
||
|
|
The new registration information comes as string formatted as JSON. You need to create a file `registration.py` that will have the following functions inside:
|
||
|
|
|
||
|
|
1. `create_new_user` that will receive a `dict` and will return a new object of the class `User` provided below. To be valid, the input `dict` must have a `username` key and a `email` key to be valid. The new `User` will have the same `username` and `email` of the input `dict`. If the input `dict` is invalid, the default user will be returned.
|
||
|
|
|
||
|
|
```python
|
||
|
|
class User:
|
||
|
|
username = 'user'
|
||
|
|
email = 'something@email.com'
|
||
|
|
```
|
||
|
|
|
||
|
|
2. `user_to_json` that will receive a `User` and will return the object as a string in JSON format. Be aware of the Python types that can be converted to JSON!
|
||
|
|
|
||
|
|
### Usage
|
||
|
|
|
||
|
|
Here is a possible `test.py` to test your functions:
|
||
|
|
|
||
|
|
```python
|
||
|
|
import create_new_user
|
||
|
|
import user_to_json
|
||
|
|
|
||
|
|
registration_0 = '{"username": "mario", "email": "mario@me.it"}'
|
||
|
|
registration_1 = '{"city": "Rome", "country": "Italy"}'
|
||
|
|
|
||
|
|
user_0 = create_new_user(registration_0)
|
||
|
|
user_1 = create_new_user(registration_1)
|
||
|
|
|
||
|
|
print(user_to_json(user_0))
|
||
|
|
print(user_to_json(user_1))
|
||
|
|
```
|
||
|
|
|
||
|
|
```console
|
||
|
|
$ python3 test.py
|
||
|
|
{"username": "mario", "email": "mario@me.it"}
|
||
|
|
{}
|
||
|
|
$
|
||
|
|
```
|
||
|
|
|
||
|
|
### Hints
|
||
|
|
|
||
|
|
- It is possible to convert an object to `dict` using the `__dict__` casting.
|
||
|
|
|
||
|
|
```python
|
||
|
|
class C:
|
||
|
|
a = 1
|
||
|
|
b = 2
|
||
|
|
|
||
|
|
my_obj = C()
|
||
|
|
my_obj_dict = my_obj.__dict__ # my_obj_dict will be a dictionary with the object my_obj values
|
||
|
|
```
|
||
|
|
|
||
|
|
### Notions
|
||
|
|
|
||
|
|
- [Class and Object](https://docs.python.org/3/tutorial/classes.html#a-first-look-at-classes)
|
||
|
|
- [json.loads()](https://www.geeksforgeeks.org/json-loads-in-python/)
|
||
|
|
- [json.dumps()](https://www.geeksforgeeks.org/json-dumps-in-python/)
|