Labs incompatibilities in certain circumstances

[evrial]

I do realize that course VM is close environment not friendly to change, but searching Piazza some students had same obstacles, if I'm incorrect, please close issue.

: org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:/vagrant/Scalable-Machine-Learning/labs-progress/data/cs190/neuro.txt

1. Relative file import path in labs produce error in case when IPython working directory changed to another from user home. For convenience using shared folder I made a change in notebook profile c.NotebookApp.notebook_dir = '/vagrant' So maybe notebook have to use explicit path of current user home directory? Something like:

from os.path import expanduser
home = expanduser("~")

1. Incompatible with numpy 1.9.2 Is that worth to make it forward compatible?