dataclasses and JSON
Python dataclasses can be serialised to JSON with dataclasses.asdict() and deserialised manually or with dacite.
Python
Intermediate
4 min read
JSON with dataclasses
Example
import json, dataclasses
from dataclasses import dataclass, field, asdict
from typing import List
@dataclass
class Post:
id: int
title: str
tags: List[str] = field(default_factory=list)
post = Post(id=1, title="Hello", tags=["python", "json"])
json_str = json.dumps(asdict(post))
# Deserialise
data = json.loads(json_str)
back = Post(**data) Pro Tip
For nested dataclasses, use the dacite library: dacite.from_dict(Post, data) handles recursion.