| | |
| | import json |
| |
|
| | import numpy as np |
| |
|
| | from .base import BaseFileHandler |
| |
|
| |
|
| | def set_default(obj): |
| | """Set default json values for non-serializable values. |
| | |
| | It helps convert ``set``, ``range`` and ``np.ndarray`` data types to list. |
| | It also converts ``np.generic`` (including ``np.int32``, ``np.float32``, |
| | etc.) into plain numbers of plain python built-in types. |
| | """ |
| | if isinstance(obj, (set, range)): |
| | return list(obj) |
| | elif isinstance(obj, np.ndarray): |
| | return obj.tolist() |
| | elif isinstance(obj, np.generic): |
| | return obj.item() |
| | raise TypeError(f'{type(obj)} is unsupported for json dump') |
| |
|
| |
|
| | class JsonHandler(BaseFileHandler): |
| |
|
| | def load_from_fileobj(self, file): |
| | return json.load(file) |
| |
|
| | def dump_to_fileobj(self, obj, file, **kwargs): |
| | kwargs.setdefault('default', set_default) |
| | json.dump(obj, file, **kwargs) |
| |
|
| | def dump_to_str(self, obj, **kwargs): |
| | kwargs.setdefault('default', set_default) |
| | return json.dumps(obj, **kwargs) |
| |
|
