code: def iter_flux_bias(cur):
      
      select = \
          """
          SELECT nodes, system_name, flux_bias, chain_strength FROM flux_bias_view;
          """
  
      for nodes, system, flux_bias, chain_strength in cur.execute(select):
          yield json.loads(nodes), system, _decode_real(flux_bias), _decode_real(chain_strength)
docs: Iterate over all flux biases in the cache.
  
      Args:
          cur (:class:`sqlite3.Cursor`):
              An sqlite3 cursor. This function is meant to be run within a :obj:`with` statement.
  
      Yields:
          tuple: A 4-tuple:
  
              list: The chain.
  
              str: The system name.
  
              float: The flux bias associated with the chain.
  
              float: The chain strength associated with the chain.