Adds the np encoder for JSON arrays

import json

import numpy as np

class NumpyEncoder(json.JSONEncoder):

    def default(self, obj):

        if isinstance(obj, np.ndarray):

            return obj.tolist()

        elif isinstance(obj, datetime.date):

            return obj.isoformat()

        return json.JSONEncoder.default(self, obj)

def read_json(inputfile):

    """

    Read the input json file into a python dictionary.