sqlalchemy one to many

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1class Parent(Base):
2    __tablename__ = 'parent'
3    id = Column(Integer, primary_key=True)
4    children = relationship("Child", back_populates="parent")
5
6class Child(Base):
7    __tablename__ = 'child'
8    id = Column(Integer, primary_key=True)
9    parent_id = Column(Integer, ForeignKey('parent.id'))
10    parent = relationship("Parent", back_populates="children")

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