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Numpyencoder

smac.utils.numpyencoder #

NumpyEncoder #

Bases: JSONEncoder

Custom encoder for numpy data types

From stackoverflow.com/a/61903895

default #

default(obj: Any) -> Any

Handle numpy datatypes if present by converting to native python

Parameters#

obj : Any Object to serialize

Returns#

Any Object in native python

Source code in smac/utils/numpyencoder.py 
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def default(self, obj: Any) -> Any:
    """Handle numpy datatypes if present by converting to native python

    Parameters
    ----------
    obj : Any
        Object to serialize

    Returns
    -------
    Any
        Object in native python
    """
    if isinstance(
        obj,
        (
            np.int_,
            np.intc,
            np.intp,
            np.int8,
            np.int16,
            np.int32,
            np.int64,
            np.uint8,
            np.uint16,
            np.uint32,
            np.uint64,
        ),
    ):
        return int(obj)

    elif isinstance(obj, (np.float16, np.float32, np.float64)):
        return float(obj)

    elif isinstance(obj, (np.complex64, np.complex128)):
        return {"real": obj.real, "imag": obj.imag}

    elif isinstance(obj, (np.ndarray,)):
        return obj.tolist()

    elif isinstance(obj, (np.bool_)):
        return bool(obj)

    elif isinstance(obj, (np.void)):
        return None

    return json.JSONEncoder.default(self, obj)