class_docstr: Class to represent a relationship between dataframes
  
  See Also:
      :class:`.EntitySet`
class_docstr_tok: ["Class","to","represent","a","relationship","between","dataframes","See","Also",":",":","class",":","`",".EntitySet","`"]
code: def __hash__(self):
      return hash(
          (
              self._parent_dataframe_name,
              self._child_dataframe_name,
              self._parent_column_name,
              self._child_column_name,
          ),
      )
  
label_desc: Use image node_id 5 for calling the Relationship obj's underlying member method code with example usage: obj.__hash__() and returns: hash