Added new JSON response handler object

import pprint

import copy

class JsonResponse:

    def __init__(self, request):

        """

        Object to wrap up simple functionality for parsing a JSON response.

        """

        # Try to load as json

        self.json = request.get_json()

        # Store raw response data

        self.data = request.get_data()

    def param(self, key, default=None):

        """Check if a key exists in a JSON/dictionary payload, and returns it."""

        # If no JSON payload exists, return early

        if not self.json:

            return None

        if key in self.json:

            return self.json[key]

        else:

            return default

def axes_to_array(coordinate_dictionary, axis_keys=['x', 'y', 'z'], base_array=None):

    """Takes key-value pairs of a JSON value, and maps onto an array"""

    # If no base array is given

    if not base_array:

        # Create an array of zeros

        base_array = [0]*len(axis_keys)

    else:

        # Create a copy of the passed base_array

        base_array = copy.copy(base_array)

    # Do the mapping

    for axis, key in enumerate(axis_keys):

        if key in coordinate_dictionary:

            base_array[axis] = coordinate_dictionary[key]

    return base_array

def parse_payload(request):

    """Convert request to JSON. Will eventually handle error-checking."""