Reading JSON

Converting JSON text (usually from the web) into a Python dictionary is called Deserialization or Parsing. We use json.loads() for this.

import json

# JSON text as a string
json_string = '{"name": "Sai", "age": 22, "is_student": true}'

# Parsing JSON string to Python Dictionary
data = json.loads(json_string)

print(type(data)) # Output: <class 'dict'>
print(data["name"]) # Output: Sai
print(data["is_student"]) # Output: True (automatically converted)

Reading from a JSON File:

If the JSON data is stored in a file, use json.load():

with open("user.json", "r") as file:
    data = json.load(file)
    print(data)

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15.4 Writing JSON

Converting a Python dictionary into a JSON string is called Serialization. We use json.dumps() for this.

import json

student_dict = {
    "name": "Ram",
    "age": 25,
    "pass": True
}

# Converting Python Dictionary to JSON String
json_data = json.dumps(student_dict, indent=4) # indent makes it look clean
print(json_data)
print(type(json_data)) # Output: <class 'str'>

Saving to a JSON File:

To save a Python dictionary directly into a file as JSON, use json.dump():

with open("student.json", "w") as file:
    json.dump(student_dict, file, indent=4)

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