Correction to ex1

Hi class-

In the exercise 1 assignment, it states to use:

Pos[IsPhobic]

to grab just the positions of the hydrophobic residues. This does work, but only if IsPhobic is a NumPy array of Boolean values. If you have made IsPhobic as a list (which is most likely the case), you'll have to convert it to an array:

IsPhobic = np.array(IsPhobic, bool)

Apologies for the confusion,
MSS