我对jsonpickle.decode和字典有问题

Question

我在使用Python3.9.9和json泡菜2.0.0将JSON解码为字典时遇到了问题。

JSON如下所示：

{
  "py/object" : "game.game.GameData",
  "origin" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : 67,
    "pos_y" : 44
  },
  "top_right" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : 1134,
    "pos_y" : -2
  },
  "bottom_right" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : 1125,
    "pos_y" : 623
  },
  "bottom_left" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : -2,
    "pos_y" : 604
  },
  "player_coordinates" : {
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/reduce\": [{\"py/type\": \"numpy.dtype\"}, {\"py/tuple\": [\"i4\", false, true]}, {\"py/tuple\": [3, \"<\", null, null, null, -1, -1, 0]}]}, {\"py/b64\": \"BAAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 4,
      "alpha" : 178,
      "pos_x" : 749,
      "pos_y" : 485
    },
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/id\": 7}, {\"py/b64\": \"AgAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 2,
      "alpha" : -4,
      "pos_x" : 290,
      "pos_y" : 421
    },
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/id\": 7}, {\"py/b64\": \"BQAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 5,
      "alpha" : 180,
      "pos_x" : 1048,
      "pos_y" : 304
    },
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/id\": 7}, {\"py/b64\": \"AQAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 1,
      "alpha" : 2,
      "pos_x" : 109,
      "pos_y" : 301
    },
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/id\": 7}, {\"py/b64\": \"AwAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 3,
      "alpha" : 0,
      "pos_x" : 296,
      "pos_y" : 165
    },
    "json://{\"py/reduce\": [{\"py/function\": \"numpy.core.multiarray.scalar\"}, {\"py/tuple\": [{\"py/id\": 7}, {\"py/b64\": \"BgAAAA==\"}]}]}" : {
      "py/object" : "player.coordinates.PlayerCoordinate",
      "player_id" : 6,
      "alpha" : -178,
      "pos_x" : 779,
      "pos_y" : 116
    }
  },
  "ball_coordinates" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : 617,
    "pos_y" : 344
  },
  "init_coordinates" : { },
  "goal_1" : {
    "py/object" : "game.goal.Goal",
    "post_1" : {
      "py/object" : "player.coordinates.BasicCoordinate",
      "pos_x" : 18,
      "pos_y" : 196
    },
    "post_2" : {
      "py/object" : "player.coordinates.BasicCoordinate",
      "pos_x" : 17,
      "pos_y" : 412
    }
  },
  "goal_2" : {
    "py/object" : "game.goal.Goal",
    "post_1" : {
      "py/object" : "player.coordinates.BasicCoordinate",
      "pos_x" : 1113,
      "pos_y" : 199
    },
    "post_2" : {
      "py/object" : "player.coordinates.BasicCoordinate",
      "pos_x" : 1111,
      "pos_y" : 423
    }
  },
  "game_status" : {
    "py/reduce" : [ {
      "py/type" : "game.game.GameStatus"
    }, {
      "py/tuple" : [ 1 ]
    } ]
  },
  "center" : {
    "py/object" : "player.coordinates.BasicCoordinate",
    "pos_x" : 562,
    "pos_y" : 311
  },
  "goals_team1" : 0,
  "goals_team2" : 0,
  "game_time" : 153.95,
  "should_log" : true
}

它使用这个命令jsonpickle.encode(data, keys=True)编码，其中data是一个dict()。在Windows机器上解码JSON是可行的，相同的Python和相同的json泡菜包。在Raspbian上，它不适用于相同的版本。

来自jsonpickle.decode的错误如下(但是，其他JSON数据可以使用相同的环境进行解码，调用时没有问题，但这些字典并不复杂)：

   m = jsonpickle.decode(msg.payload, keys=True)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 50, in decode
    return context.restore(data, reset=reset, classes=classes)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 163, in restore
    value = self._restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 196, in _restore
    return restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 359, in _restore_object
    return self._restore_object_instance(obj, cls)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 421, in _restore_object_instance
    instance = self._restore_object_instance_variables(obj, instance)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 477, in _restore_object_instance_variables
    instance = self._restore_from_dict(obj, instance)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 446, in _restore_from_dict
    value = self._restore(v)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 196, in _restore
    return restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 570, in _restore_dict
    k = self._restore_pickled_key(k)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 613, in _restore_pickled_key
    key = decode(
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 50, in decode
    return context.restore(data, reset=reset, classes=classes)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 163, in restore
    value = self._restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 196, in _restore
    return restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 266, in _restore_reduce
    reduce_val = list(map(self._restore, obj[tags.REDUCE]))
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 196, in _restore
    return restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 537, in _restore_tuple
    return tuple([self._restore(v) for v in obj[tags.TUPLE]])
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 537, in <listcomp>
    return tuple([self._restore(v) for v in obj[tags.TUPLE]])
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 196, in _restore
    return restore(obj)
  File "/home/user/venv/lib/python3.9/site-packages/jsonpickle/unpickler.py", line 278, in _restore_reduce
    stage1 = f(*args)
TypeError: 'dict' object is not callable

不幸的是，我不知道在哪里发布这样的问题(json泡菜)到其他地方，这就是为什么我在这里尝试我的运气。在GitHub上，只有报告错误的可能性。

Answer 1

我今天遇到了这个问题(Linux上的json泡菜2.2.0 )，并且能够追踪到它。导出的JSON中声明的每个py/object类型都必须是公共类型。在我的例子中，我有一个namedtuple，它位于一个类中，而不是模块的顶层。jsonpickle将对象类型记录为SystemStatus.MyTuple，一旦我将该MyTuple定义移至模块顶部，jsonpickle就能够通过将记录的参数传递给它来恢复该对象。

我的暗示是这个关于名称元组的仍然打开的错误让我开始四处张望。

(我知道OP在一条评论中指出，这个问题自己解决了，但差不多一年后，我遇到了同样的问题，这是谷歌最热门的问题之一，这就是我的答案。)