code: def db_aws_list_instances(self):
          ''' List AWS DB instances '''
          instances = self.db_services.get_db_instances()
          if not instances:
              print("There are no DB instances associated with your AWS account " \
                  "in region " + self.db_services.get_region())
          else:
              print("Here are the current DB instances associated with your AWS " \
                  "account in region " + self.db_services.get_region())
              for dbinst in instances:
                  print '\t'+'-'*20
                  print "\tInstance ID: " + dbinst.id
                  print "\tStatus: " + dbinst.statuf db_aws_list_instances(self):
          ''' List AWS DB instances '''
          instances = self.db_services.get_db_instances()
          if not instances:
              print("There are no DB instances associated with your AWS account " \
                  "in region " + self.db_services.get_region())
          else:
              print("Here are the current DB instances associated with your AWS " \
                  "account in region " + self.db_services.get_region())
              for dbinst in instances:
                  print '\t'+'-'*20
                  print "\tInstance ID: " + dbinst.id
                  print "\tStatus: " + dbinst.status
docs: List AWS DB instances