code: def _verify_subnet_association(route_table_desc, subnet_id):
      '''
      Helper function verify a subnet's route table association
  
      route_table_desc
          the description of a route table, as returned from boto_vpc.describe_route_table
  
      subnet_id
          the subnet id to verify
  
      .. versionadded:: 2016.11.0
      '''
      if route_table_desc:
          if 'associations' in route_table_desc:
              for association in route_table_desc['associations']:
                  if association['subnet_id'] == subnet_id:
                      return True
      return Falsf _verify_subnet_association(route_table_desc, subnet_id):
      '''
      Helper function verify a subnet's route table association
  
      route_table_desc
          the description of a route table, as returned from boto_vpc.describe_route_table
  
      subnet_id
          the subnet id to verify
  
      .. versionadded:: 2016.11.0
      '''
      if route_table_desc:
          if 'associations' in route_table_desc:
              for association in route_table_desc['associations']:
                  if association['subnet_id'] == subnet_id:
                      return True
      return False
docs: Helper function verify a subnet's route table association
  
      route_table_desc
          the description of a route table, as returned from boto_vpc.describe_route_table
  
      subnet_id
          the subnet id to verify
  
      .. versionadded:: 2016.11.0