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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def make_serializable(json):
 """This function ensures that the dictionary is JSON serializable. If not, keys with non-serializable values are removed from the return value. Args: json (dict):
 Dictionary to convert to serializable Returns: new_dict (dict):
 New dictionary with non JSON serializable values removed """

    new_dict = dict()
    for key, value in iteritems(json):
        if is_valid_json(value):
            new_dict[key] = value

    return new_dict