Programiz, another shell for python (#6549)

* Programiz

Added another python shell for programming online

* Alphabetic order typo fixed

Now the contribution is embbeded in alphabetical order

more/free-programming-playgrounds.md

@@ -210,6 +210,7 @@
 ### Python
 
 * [Codepad](http://codepad.org/?lang=Python)
+* [Programiz.com](https://www.programiz.com/python-programming/online-compiler/)
 * [Python Trinket](https://trinket.io/python)
 * [Python.org Shell](https://www.python.org/shell)
 * [Repl.it - NiceDualPoint](https://repl.it/repls/NiceDualPoint#main.py)