from sqlalchemy import Column, Integer, String, DateTime from datetime import datetime from sqlalchemy.sql.traversals import ColIdentityComparatorStrategy from .database import Base class URL(Base): __tablename__ = "urls" id = Column(Integer, primary_key=True, index=True) short_code = Column(String, unique=True, index=True) long_url = Column(String) create_at = Column(DateTime, default=datetime.utcnow)