add apiexplorer link

Author: humanhuang

README.md

@@ -9,6 +9,16 @@ The Alibaba Cloud Python Software Development Kit (SDK) allows you to access Ali
 
 This document introduces how to obtain and call Alibaba Cloud Python SDK.
 
+
+## Online Demo
+
+**[API Explorer](https://api.aliyun.com)** provides the ability to call the cloud product OpenAPI online, and dynamically generate SDK Example code and quick retrieval interface, which can significantly reduce the difficulty of using the cloud API. **It is highly recommended**.
+
+<a href="https://api.aliyun.com" target="api_explorer">
+  <img src="https://img.alicdn.com/tfs/TB12GX6zW6qK1RjSZFmXXX0PFXa-744-122.png" width="180" />
+</a>
+
+
 ## Prerequisites
 
 - To use Alibaba Cloud Python SDK, you must have an Alibaba Cloud account as well as an AccessKey.

README_zh.md

@@ -6,6 +6,16 @@
 欢迎使用阿里云开发者工具套件（SDK）。阿里云Python SDK让您不用复杂编程即可访问云服务器、云监控等多个阿里云服务。这里向您介绍如何获取阿里云<span style="background-color:rgb(250, 250, 250);"><span style="color:rgb(89, 89, 89);">Python</span></span> SDK并开始调用。
 如果您在使用SDK的过程中遇到任何问题，欢迎前往[阿里云SDK问答社区](https://yq.aliyun.com/tags/type_ask-tagid_23350)提问，提问前请阅读[提问引导](https://help.aliyun.com/document_detail/93957.html)。亦可在当前GitHub提交Issues。
 
+
+## 在线示例
+
+**[API Explorer](https://api.aliyun.com)** 提供在线调用云产品 OpenAPI、并动态生成 SDK Example 代码和快速检索接口等能力，能显著降低使用云 API 的难度，强烈推荐使用
+
+<a href="https://api.aliyun.com" target="api_explorer">
+  <img src="https://img.alicdn.com/tfs/TB12GX6zW6qK1RjSZFmXXX0PFXa-744-122.png" width="180" />
+</a>
+
+
 ## 环境准备
 1. 要使用阿里云<span style="background-color:rgb(250, 250, 250);"><span style="color:rgb(89, 89, 89);">Python</span></span> SDK，您需要一个云账号以及一对`Access Key ID`和`Access Key Secret`。 请在阿里云控制台中的[AccessKey管理页面](https://usercenter.console.aliyun.com/?spm=5176.doc52740.2.3.QKZk8w#/manage/ak)上创建和查看您的Access Key，或者联系您的系统管理员
 2. 要使用阿里云SDK访问某个产品的API，您需要事先在[阿里云控制台](https://home.console.aliyun.com/?spm=5176.doc52740.2.4.QKZk8w)中开通这个产品。