Update 28_try.py

MorvanZhou · web-flow · commit cd174d437baf · 2016-06-14T10:39:58.000+10:00
diff --git a/basic/28_try.py b/basic/28_try.py
@@ -1,3 +1,8 @@
+# View more python learning tutorial on my Youtube and Youku channel!!!
+
+# Youtube video tutorial: https://www.youtube.com/channel/UCdyjiB5H8Pu7aDTNVXTTpcg
+# Youku video tutorial: http://i.youku.com/pythontutorial
+
 try:
     file = open('eeee', 'r+')
 except Exception as e:
