def find_in_map(map_name, key, value):
    """The intrinsic function Fn::FindInMap returns the value of a key from a \
    mapping declared in the Mappings section.

    Args:
        map_name: The logical name of the mapping declared in the Mappings
            section that contains the key-value pair.
        key: The name of the mapping key whose value you want.
        value: The value for the named mapping key.

    Returns: The map value.

    .. note:
        find_in_map is represented here "just in case".
        Most likely, using the python equivalent in a pyplate will be
        easier to both look at and maintain.

    """
    return {'Fn::FindInMap': [map_name, key, value]}