Add Chinese courses about Python (#11086)

* Add Chinese courses about Python

Signed-off-by: xiaobo <xiaobo@uniontech.com>

* Update free-courses-zh.md

* Update courses/free-courses-zh.md

Co-authored-by: Eric Hellman <eric@hellman.net>

* Update courses/free-courses-zh.md

Co-authored-by: Eric Hellman <eric@hellman.net>

---------

Signed-off-by: xiaobo <xiaobo@uniontech.com>
Co-authored-by: Eric Hellman <eric@hellman.net>

courses/free-courses-zh.md

@@ -4,7 +4,8 @@
 * [AI](#ai)
 * [Flutter](#flutter)
 * [Linux](#linux)
-* [OS](#OS)
+* [OS](#os)
+* [Python](#python)
 
 
 ### 0 - MOOC
@@ -12,6 +13,12 @@
 * [freeCodeCamp](https://chinese.freecodecamp.org)
 
 
+### AI
+
+* [动手学深度学习](https://zh.d2l.ai/index.html) - d2lzh
+* [机器学习速成课程](https://developers.google.com/machine-learning/crash-course/prereqs-and-prework?hl=zh-cn) - 谷歌出品
+
+
 ### Flutter
 
 * [Flutter 仿微信朋友圈](https://www.youtube.com/playlist?v=7lZRWWELIaA&list=PL274L1n86T80VQcJb76zcXcPpF-S-fFV-) - ducafecat
@@ -29,7 +36,6 @@
 * [操作系统原理 清华大学](https://www.youtube.com/playlist?list=PLgSjsxruwagoYuFuMnUY-lMzTfQR7ugw9) - 自我学习Evan
 
 
-### AI
+### Python
 
-* [动手学深度学习](https://zh.d2l.ai/index.html) - d2lzh
-* [机器学习速成课程](https://developers.google.com/machine-learning/crash-course/prereqs-and-prework?hl=zh-cn) - 谷歌出品
+* [Python 新教程全集](https://www.youtube.com/playlist?list=PLF2BRDzmXcWqMzQlIUOjiGVmiyEcHiO3q) - 在线教育