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Python Beginner 3 min read

Python JSON Summary

JSON Summary

Python's json module handles basic serialisation. For custom types, use JSONEncoder. For validation, use Pydantic or jsonschema. For performance, use orjson. For large files, stream with ijson or JSONL.

Example
import json, orjson
from pydantic import BaseModel

class Item(BaseModel):
    id: int; name: str; price: float

item = Item(id=1, name="Widget", price=9.99)
fast = orjson.dumps(item.model_dump())   # fast bytes
back = Item.model_validate_json(fast)    # validate and parse
Pro Tip

Choose json for portability, orjson for speed, Pydantic for validation — they complement each other.