from sqlalchemy import Column, String, LargeBinary, Integer
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base

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

class File(Base):
    __tablename__ = 'files'
    id = Column(Integer, primary_key=True)
    name = Column(String)
    data = Column(LargeBinary)

with open("test.png", "rb") as file:
    data = file.read()

x = File(id=0, name="test.png", data=data)
print(x)