__init__.py 文件源码

def invalid_json_values(obj):
    if isinstance(obj, np.generic):
        return obj.item()
    if isinstance(obj, np.ndarray):
        return obj.tolist()
    if isinstance(obj, bytes):
        return obj.decode('cp437')

    if isinstance(map, type) and isinstance(obj, map):
        # python 3 map
        return list(obj)

    raise TypeError('Invalid data type passed to json encoder: ' + type(obj).__name__)