不得不四处寻找,但如果有疑问,请检查测试！ SQLAlchemy tests for the range types使用基础psycopg2 types.

from psycopg2.extras import NumericRange
from sqlalchemy import create_engine,Column,Integer
from sqlalchemy.dialects.postgresql import INT4RANGE
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import sessionmaker

engine = create_engine('postgresql:///example',echo=True)
Session = sessionmaker(bind=engine)
session = Session()
Base = declarative_base(bind=engine)


class Example(Base):
    __tablename__ = 'example'

    id = Column(Integer,primary_key=True)
    window = Column(INT4RANGE,nullable=False)


Base.Metadata.create_all()

session.add(Example(window=NumericRange(2,6)))
session.add(Example(window=NumericRange(4,8)))
session.commit()