code: def p_lvalue_partselect(self, p):
          'lvalue : lpartselect'
          p[0] = Lvalue(p[1], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1)f p_lvalue_partselect(self, p):
          'lvalue : lpartselect'
          p[0] = Lvalue(p[1], lineno=p.lineno(1))
          p.set_lineno(0, p.lineno(1))
docs: lvalue : lpartselect