Writing a GenericEncoder to prevent JSON conversion errors

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class GenericEncoder(json.JSONEncoder):
import numpy
def default(self, obj):
if isinstance(obj, numpy.generic):
return numpy.asscalar(obj)
elif isinstance(obj, datetime.datetime):
return obj.strftime('%Y-%m-%d %H:%M:%S')
else:
return json.JSONEncoder.default(self, obj)

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