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Type Hints and Pydantic
Last Updated: March 13, 2026
Ashish Pratap Singh
7 min read
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Python Type Hints: The Basics
Optional, Union, and None Types
Type Aliases, TypeVar, and Generics
Pydantic: Type Hints That Actually Enforce
Nested Models
Custom Validators
Serialization: Getting Data Out
Pydantic Settings for Configuration
Real-World Example: Structured LLM Output Schema...
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