from pydantic import BaseModel, field_validator import re class NewsletterRequest(BaseModel): message: str class CreateUpdateOtdel(BaseModel): name: str class UserLogin(BaseModel): username: str password: str @field_validator('username') def username_validation(cls, v): if not re.match(r"^[a-zA-Z0-9_-]{4,}$", v): raise ValueError('Username must be at least 4 characters long and contain only English letters, digits, hyphens, or underscores') return v @field_validator('password') def password_validation(cls, v): if len(v) < 6: raise ValueError('Password must be at least 6 characters long') return v