Not performing PCA - pref is not define

[Dipeshtamboli]

Code is not performing PCA.

flsim/scripts/pca.py

Line 56 in 59d39e6

output = [(clients[i].client_id, clients[i].pref, weight) for i, weight in enumerate(weight_vecs)]

clients[i].pref is not define.

AttributeError: 'Client' object has no attribute 'pref'