Thought it may be good to print an example of check_env.py and encourage people to update old package versions (I saw that there are minimum version requirements in check_env.py, but I am not sure if they are still okay in 2016 when we update the teaching material; so, instead of testing each single "old" version, it's probably better to encourage people to the latest versions we are using to avoid debugging additional technical issues during teaching)
Thought it may be good to print an example of check_env.py and encourage people to update old package versions (I saw that there are minimum version requirements in check_env.py, but I am not sure if they are still okay in 2016 when we update the teaching material; so, instead of testing each single "old" version, it's probably better to encourage people to the latest versions we are using to avoid debugging additional technical issues during teaching)