SqlAchemy spurious select

unnecessary_select.py

import uuid

from sqlalchemy import Column, String, create_engine, CHAR
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker


engine = create_engine('sqlite:///:memory:', echo=True)

Base = declarative_base()

class User(Base):
    __tablename__ = 'users'

    id = Column(CHAR(16), primary_key=True, default=lambda: uuid.uuid4().bytes)
    name = Column(String)



Base.metadata.create_all(engine)
Session = sessionmaker(bind=engine)
session = Session()

user = User(name='john')

session.add(user)
session.commit()

print(user.id)