How do I work with nested JSON in Python?

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To work with nested JSON in Python, you can use the built-in json module.

1. Import the json module:

import json

1. Load the JSON string or file into a Python object using the json.loads() or json.load() method:

data = '{"name": "John", "age": 30, "city": "New York", "skills": {"language": "Python", "database": "MySQL"}}'

python_obj = json.loads(data)

or

with open('data.json') as f:
    python_obj = json.load(f)

1. Access the nested elements using key-value pairs:

print(python_obj['name'])  # John
print(python_obj['skills']['language'])  # Python

1. Modify the nested elements:

python_obj['skills']['database'] = 'PostgreSQL'

print(python_obj['skills'])  # {'language': 'Python', 'database': 'PostgreSQL'}

1. Convert the Python object back to a JSON string using the json.dumps() method:

new_data = json.dumps(python_obj)

print(new_data)

OUTPUT:

{'name': 'John', 'age': 30, 'city': 'New York', 'skills': {'language': 'Python', 'database': 'PostgreSQL'}}