code: def regions():
      
      regions = []
      for region_name in RegionData:
          region = RegionInfo(name=region_name,
                              endpoint=RegionData[region_name],
                              connection_cls=CloudWatchConnection)
          regions.append(region)
      return regions
docs: Get all available regions for the CloudWatch service.
  
      :rtype: list
      :return: A list of :class:`boto.RegionInfo` instances