s://github.com/PaddlePaddle/Paddle/pull/4505): Refine the example code in "Testing Backward Operators" of new_op_cn/en.md, since

[源自github用户QiJune](https://github.com/PaddlePaddle/Paddle/pull/441): use pep8 code style to format python code in demo, doc, doc_cn and paddle directories

[源自github用户QiJune](https://github.com/PaddlePaddle/Paddle/pull/442): use pep8 code style to format python code in demo, doc, doc_cn and paddle directories

[源自github用户QiJune](https://github.com/PaddlePaddle/Paddle/pull/442): use pep8 code style to format python code in demo, doc, doc_cn and paddle directories

at cn.hutool.http.HttpRequest.send(HttpRequest.java:1154) at cn.hutool.http.HttpRequest.execute(HttpRequest.java:959) at cn.hutool

olk-0b27dd2c-e39e-4aa1-a782-3ec0c27e8329 -cn 3 --nginx-port 8066 ![输入图片说明](https://images.gitee.com/uploads/images/2021/1214/192840_96ce57ad_7676286

behavior BUG- each link redirects to /zh-CN/… page (instead of /en/..): https://www.mindspore.cn/tutorial/training/en/master/index.html

版本情况 JDK版本： openjdk_8_201 hutool版本： 5.2.0 ### 问题描述（包括截图） 复杂对象使用cn.hutool.json.JSONUtil.toBean 时 BigDecimal类型精度丢失 1. 复现代码 ```java

[源自github用户QiJune](https://github.com/PaddlePaddle/Paddle/pull/441): use pep8 code style to format python code in demo, doc, doc_cn and paddle directories

https://mirrors.nwsuaf.edu.cn/openeuler/ ![输入图片说明](https://images.gitee.com/uploads/images/2022/0110/171303_7e411c73_5441867.png

es.gitee.com/uploads/images/2018/0816/152737_2bb2444d_804942.png "屏幕截图.png") 断点流程： ![输入图片说明](https://images.gitee.com/uploads/