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import json
import numpy as np
np_version = tuple(map(int, np.__version__.split(".")))
if np_version < (2, 0, 0):
NP_FLOATS = (np.float_, np.float16, np.float32, np.float64)
NP_COMPLEX = (np.complex_, np.complex64, np.complex128)
else:
NP_FLOATS = (np.float16, np.float32, np.float64)
NP_COMPLEX = (np.complex64, np.complex128)
class NumpyEncoder(json.JSONEncoder):
"""Custom encoder for numpy data types"""
def default(self, obj):
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_FLOATS):
return float(obj)
elif isinstance(obj, NP_COMPLEX):
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)
def encode(data_structure):
return json.loads(json.dumps(data_structure, cls=NumpyEncoder))
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