[Scikit-learn-general] precision_recall_fscore_support returning None for binary classification

[Zura Isakadze]

Hello,

I was wondering why precision_recall_fscore_support returns support=None
for binary inputs:

example:

print precision_recall_fscore_support([0,0], [1, 1], average='binary')
(0,0,0,None)

For me, it makes sense to have it.