如何反序列化Python对象表的json表示

Question

我有一个Point Class 绘图类，其成员是Point的列表

我想将Drawing类放入sqlalchemy的sqlite记录中，为此我需要序列化Point列表。

class Point:
    def __init__(self, x, y):
        self.x = x
        self.y = y

def encode_Point(obj):

    if isinstance(obj, Point):
        return obj.__dict__

    return obj

class Drawing:
    def __init__(self):
        self.m_points = []
        self.m_name = "Foo"

在编码时：

pointsJsonDump = dumps(drawing.m_points, default=encode_Point)
i.execute(name='Bar', points=pointsJsonDump)

＆＃39;转储＆＃39;函数给出的是例如：

[{"y": 71, "x": 373}, {"y": 104, "x": 342}, {"y": 183, "x": 338}, {"y": 200, "x": 433}, {"y": 140, "x": 504}]

然后我将此字符串存储到带有sqlalchemy的sqlite表中。

现在我希望能够再次将此记录检索到Python对象中： 所以我盯着看：

s = self.m_drawingsTable.select()
rs = s.execute()

for row in rs:
    d = Drawing()
    # Put the record into a Python object
    # Here i put each field into a member of an object
    # Ex: d.name = row.name

但是如何从json对象重建Point []？