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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 stack_template_key_name(blueprint):
 """Given a blueprint, produce an appropriate key name. Args: blueprint (:class:`stacker.blueprints.base.Blueprint`):
 The blueprint object to create the key from. Returns: string: Key name resulting from blueprint. """

    name = blueprint.name
    return "stack_templates/%s/%s-%s.json" % (blueprint.context.get_fqn(name),
                                              name,
                                              blueprint.version)