Add getting help in Notebook

[datapolitan]

Examples Alfred showed in class

[datapolitan]

Function and ?

[datapolitan]

Shift tab for signature
Tab complete

[datapolitan]

Related to #84 for helping orient participants to the notebook environment

[justalfred]

You know, I think I'm going to leave these out until Jupyter gets smarter. These helpers aren't consistently available, and I'm worried it's just confusing or frustrating when they don't work. e.g. df.groupby? works, but df.groupby(col).count? does not. It makes sense to us why, but makes it less useful for the students if they give up on these features.

Curious to hear other thoughts.

[datapolitan]

I'm good with this. We can also play with it in class and see if there's something that sticks. I mention tab completion as I go through, but that's different for each class depending on their skill and saturation tolerance. Happy to hold onto this one.