Here's the `posts.py` file with Pydantic schemas for posts, to be placed in the `app/api/v1/schemas/` directory:

from datetime import datetime
from typing import Optional

from pydantic import BaseModel, Field

class PostBase(BaseModel):
    title: str = Field(..., min_length=3, max_length=100)
    content: str = Field(..., min_length=10)

class PostCreate(PostBase):
    pass

class PostUpdate(PostBase):
    pass

class PostInDBBase(PostBase):
    id: int
    created_at: datetime
    updated_at: Optional[datetime] = None

    class Config:
        orm_mode = True

class Post(PostInDBBase):
    pass

class PostInDB(PostInDBBase):
    pass

This file defines the following Pydantic models:


These models can be used in the FastAPI routes and services to validate and handle the data related to posts. They ensure data consistency and provide a clear separation between the different operations (create, update, read) on posts.

Note: Make sure to import the necessary dependencies (`datetime`, `typing`, and `pydantic`) at the top of the file.