mysql IntegrityError: (pymysql.err.IntegrityError) (1062, "Duplicate entry '000001.SZ-2018-07-02' for key 'PRIMARY'")
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mysql IntegrityError: (pymysql.err.IntegrityError) (1062, "Duplicate entry '000001.SZ-2018-07-02' for key 'PRIMARY'")
and originates from the database driver (DBAPI), not SQLAlchemy itself.