Update readme.md

uwspstar · web-flow · commit dfeb7bda45d5 · 2020-03-25T20:03:14.000-05:00
diff --git a/python/readme.md b/python/readme.md
@@ -5,7 +5,7 @@ https://www.udemy.com/course/complete-python-developer-zero-to-mastery
 https://www.udemy.com/course/learn-python-by-building-a-blockchain-cryptocurrency/learn/lecture/10030662#overview
 - The Modern Python 3 Bootcamp
  https://www.udemy.com/course/the-modern-python3-bootcamp/learn/lecture/7991036#overview
-
+- The key differences between Python 2.7.x and Python 3.x with examples http://sebastianraschka.com/Articles/2014_python_2_3_key_diff.html
 ### math function
 - https://www.programiz.com/python-programming/modules/math
 ### sort() vs sorted()
