How do I comment out multiple lines in Jupyter Ipython notebook? [closed]

Answer 1

I tried this on Mac OSX with Chrome 42.0.2311.90 (64-bit) and this works by using CMD + /

The version of the notebook server is 3.1.0-cbccb68 and is running on:
Python 2.7.9 |Anaconda 2.1.0 (x86_64)| (default, Dec 15 2014, 10:37:34) 
[GCC 4.2.1 (Apple Inc. build 5577)]

Could it be a browser related problem? Did you try Firefox or IE?