SQLAlchemy 0.9 added built-in support for the JSON data type of PostgreSQL. But when I defined an object mapper which has a JSON field and set its value to a perfect JSON string:SQLAlchemy 0.9 added built-in support for the J
阅读背景：
为什么sqlalchemy添加\“为了一个完美的JSON字符串到postgresql json字段？
来源：互联网
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