diff --git a/semana_2/contenido.md b/semana_2/contenido.md
index 39d7e1c..b116680 100644
--- a/semana_2/contenido.md
+++ b/semana_2/contenido.md
@@ -116,6 +116,7 @@ https://www.datacamp.com/courses/intro-to-python-for-data-science
 https://docs.python-guide.org/intro/learning/    
 https://www.codecademy.com/learn/learn-python    
 https://pythonprogramming.net/   
-http://www.scipy-lectures.org/
-https://www.programiz.com/
+http://www.scipy-lectures.org/   
+https://www.programiz.com/   
+[https://pythonium.net/](https://pythonium.net/)