:doc:`ServiceResource <index>` / Sub-Resource / Topic

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Topic
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.. py:method:: SNS.ServiceResource.Topic(arn)

  Creates a Topic resource.::

    topic = sns.Topic('arn')

  :type arn: string
  :param arn: The Topic's arn identifier. This **must** be set.
  
  :rtype: :py:class:`SNS.Topic`
  :returns: A Topic resource
  