pydantic_lazy_model_deferred_field_evaluation_quickstart.py

1from typing import List
2from lazy_model import LazyModel
3
4class User(LazyModel):
5    id: int
6    username: str
7    email: str
8    tags: List[str]
9
10# Data can be provided as a dictionary or a callable
11data = {
12    "id": 1,
13    "username": "john_doe",
14    "email": "john@example.com",
15    "tags": ["python", "pydantic", "lazy"]
16}
17
18# The model is initialized without parsing the full dictionary immediately
19user = User(data)
20
21# Fields are parsed and cached only when accessed
22print(user.username)  # john_doe
23print(user.tags)      # ['python', 'pydantic', 'lazy']