Two primary keys on NonceTimestamp

[Christopher Allan Webber]

Not sure what's going on here:

class NonceTimestamp(Base):
    """
        A place the timestamp and nonce can be stored - this is for OAuth1
    """
    __tablename__ = "core__nonce_timestamps"

    nonce = Column(Unicode, nullable=False, primary_key=True)
    timestamp = Column(DateTime, nullable=False, primary_key=True)

but by definition they can't both be primary keys.

[Christopher Allan Webber]

Oh, it might be a composite primary key. Never mind.