Interactive Demo

Try lodum directly in your browser! This demo uses Pyodide to run a full Python environment in your browser with zero installation.

Python Code: from lodum import lodum, json, yaml from dataclasses import dataclass @lodum @dataclass class User: name: str age: int is_active: bool # Create an object user = User(name="Alex", age=30, is_active=True) # Serialize to JSON json_data = json.dumps(user) print(f"JSON Output: {json_data} ") # Serialize to YAML yaml_data = yaml.dumps(user) print(f"YAML Output: {yaml_data}") # Deserialize back new_user = json.loads(User, json_data) print(f" Deserialized: {new_user}")

Run Code

Initializing Pyodide...

Output:

How it works

This page loads the official Pyodide distribution and uses micropip to install lodum directly into your browser's memory. No data is sent to a server; all serialization and deserialization happen locally in your browser.