added a new data structure course in python (#8853)

* Update free-courses-en.md

added a youtube course for data structures in python

* Update free-courses-en.md

alphabetically ordered

* added a new data structure in python course

* Update courses/free-courses-en.md
Co-authored-by: NSharan J <50091666+shrn01@users.noreply.github.com>

* Update free-courses-en.md

* Update courses/free-courses-en.md
Co-authored-by: NSharan J <50091666+shrn01@users.noreply.github.com>

* try escaping '

* try ’

* try ordering the MIT courses by the author ????

* try using &apos;

* try deleting the line??

* just delete the ' ?????

* Maybe it's the pipe character
Co-authored-by: NSharan J <50091666+shrn01@users.noreply.github.com>
Co-authored-by: NEric Hellman <eric@hellman.net>

courses/free-courses-en.md

@@ -146,6 +146,7 @@
 * [Data Structures](https://www.youtube.com/playlist?list=PL2_aWCzGMAwI3W_JlcBbtYTwiQSsOTa6P) - mycodeschool
 * [Data Structures](https://stepik.org/course/579/syllabus) - Niema Moshiri, Liz Izhikevich (Stepik)
 * [Data Structures](https://youtube.com/playlist?list=PLBlnK6fEyqRj9lld8sWIUNwlKfdUoPd1Y) - Neso Academy (YouTube)
+* [Data Structures \| Python](https://www.youtube.com/playlist?list=PLzgPDYo_3xukPJdH6hVQ6Iic7KiJuoA-l) - Amulya's Academy
 * [Data Structures and Algorithms](https://youtube.com/playlist?list=PLBZBJbE_rGRV8D7XZ08LK6z-4zPoWzu5H) - CS Dojo
 * [Data Structures and Algorithms](https://www.youtube.com/playlist?list=PLdo5W4Nhv31bbKJzrsKfMpo_grxuLl8LU) - Jenny's lectures CS/IT NET&JRF
 * [Data Structures and Algorithms](https://techdevguide.withgoogle.com/paths/data-structures-and-algorithms/?no-filter=true) - Tech Dev Guide by Google