Python Code to Work with JSON Data

JSON is a text format used by websites and APIs to send data. It looks like a Python dictionary. Python has a built-in json module to convert between JSON text and Python objects.

JSON string to Python (json.loads)

import json

data = '{"name": "Robin", "age": 25, "skills": ["Python", "SQL"]}'

user = json.loads(data)

print(user["name"])
print(user["skills"][0])
print(type(user))

Output:

Python to JSON string (json.dumps)

import json

user = {"name": "Robin", "age": 25, "skills": ["Python", "SQL"]}

print(json.dumps(user))

Output:

Add indent=2 to json.dumps() to get a nicely formatted text with line breaks.

Save to and load from a file

import json

user = {"name": "Robin", "age": 25}

with open("user.json", "w") as f:
    json.dump(user, f)

with open("user.json") as f:
    loaded = json.load(f)

print(loaded["age"])

Output:

Related: Python Dictionary and Python File Handling.

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