这在python中是什么格式（b'{"StartTime":"2023-06-12 17:56:12,304","Data":[{"Time":8745,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8778,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8811,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8844,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]}]}'）

这是一个 bytes 类型的数据，表示一个 JSON 格式的字符串。JSON（JavaScript Object Notation）是一种轻量级的数据交换格式，常用于前后端数据传输、API 接口等场景。在 Python 中，可以使用 json 模块将 JSON 字符串转换为 Python 数据类型，例如字典、列表等。可以使用以下代码将这个 bytes 对象转换为 Python 字典：

import json

data = b'{"StartTime":"2023-06-12 17:56:12,304","Data":[{"Time":8745,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8778,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8811,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]},{"Time":8844,"Disp":[-0.101,-0.244,0.161,1.816],"PtPos":[1318.966,449.813,1495.969,436.296]}]}'
data_dict = json.loads(data)

print(data_dict)

输出结果如下：

{'StartTime': '2023-06-12 17:56:12,304', 'Data': [{'Time': 8745, 'Disp': [-0.101, -0.244, 0.161, 1.816], 'PtPos': [1318.966, 449.813, 1495.969, 436.296]}, {'Time': 8778, 'Disp': [-0.101, -0.244, 0.161, 1.816], 'PtPos': [1318.966, 449.813, 1495.969, 436.296]}, {'Time': 8811, 'Disp': [-0.101, -0.244, 0.161, 1.816], 'PtPos': [1318.966, 449.813, 1495.969, 436.296]}, {'Time': 8844, 'Disp': [-0.101, -0.244, 0.161, 1.816], 'PtPos': [1318.966, 449.813, 1495.969, 436.296]}]}