code: def p_expr_number(p):
      "number : NUMBER"
      p[0] = node.number(p[1], lineno=p.lineno(1), lexpos=p.lexpos(1)f p_expr_number(p):
      "number : NUMBER"
      p[0] = node.number(p[1], lineno=p.lineno(1), lexpos=p.lexpos(1))
docs: number : NUMBER