code: def concat(self, *others):
          
          import ibis.expr.operations as ops
  
          exprs = list(self.exprs())
          for o in others:
              if not isinstance(o, ExprList):
                  raise TypeError(o)
              exprs.extend(o.exprs())
          return ops.ExpressionList(exprs).to_expr()
docs: Concatenate expression lists
  
          Returns
          -------
          combined : ExprList