code: def exists(name, region=None, key=None, keyid=None, profile=None):
      '''
      Check to see if an SNS topic exists.
  
      CLI example::
  
          salt myminion boto_sns.exists mytopic region=us-east-1
      '''
      topics = get_all_topics(region=region, key=key, keyid=keyid,
                              profile=profile)
      if name.startswith('arn:aws:sns:'):
          return name in list(topics.values())
      else:
          return name in list(topics.keys()f exists(name, region=None, key=None, keyid=None, profile=None):
      '''
      Check to see if an SNS topic exists.
  
      CLI example::
  
          salt myminion boto_sns.exists mytopic region=us-east-1
      '''
      topics = get_all_topics(region=region, key=key, keyid=keyid,
                              profile=profile)
      if name.startswith('arn:aws:sns:'):
          return name in list(topics.values())
      else:
          return name in list(topics.keys())
docs: Check to see if an SNS topic exists.
  
      CLI example::
  
          salt myminion boto_sns.exists mytopic region=us-east-1