@staticmethod
def set_list_index(data, index, value):
    """Set value in list at specified index.
        All the values before target index should stay unchanged
        or be filled with None.
        :param data: List where value should be set
        :param index: String or Int of target index
        :param value: Target value to put under index
        """
    for _ in range(len(data), int(index) + 1):
        data.append(None)
    else:
        data[int(index)] = value
