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�ZG dd� dej �ZG dd� dej �ZG dd� dej �ZG dd� dej �ZG dd� dej �Zd d � Ze�d �d d � �Zd!S )"zSQLAlchemy ORM exceptions.� )�exc)�utilc @ s e Zd ZdZdS )�StaleDataErroraa An operation encountered database state that is unaccounted for.
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exception is raised.
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