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TypeSpec is used as an argument type for extraction-based methods on pages. It allows specifying the type of data to return after extraction. TypeSpec supports:
  • Pydantic models (for data validation and serialization)
  • JSON Schema (for defining data structure and validation)
  • Primitive types (int, float, bool, str)
Usage example 
from pydantic import BaseModel
from typing import Optional
from datetime import datetime

class Article(BaseModel):
    title: str
    content: str
    author: str
    published_at: Optional[datetime] = None
    views: Optional[int] = 0

article = browser.extract("The article information", type_spec=Article)
print(article.title)