JSON

JSON is how systems exchange data. Python's json module converts both ways.

The two calls

• json.dumps(obj, indent=2) — Python → JSON string
• json.loads(text) — JSON string → Python

Type mapping

Python	JSON
dict	object
list, tuple	array
str	string
int, float	number
True, False	true, false
None	null

Try it

1. Parse '{"a": 1, "b": [2, 3]}' and print b's sum.
2. Serialize {"date": datetime.date.today()} — what error do you get? Why?