#NEWLINE# def show_most_informative_features( vectorizer , clf , n = 20 ) : #NEWLINE# #INDENT# c_f = sorted ( zip ( c1 . coef_ [ 0 ] , vectorizer . get_feature_names ( ) ) ) #NEWLINE# top = zip ( c_f [ : n ] , c_f [ : ( - ( n + 1 ) ) : ( - 1 ) ] ) #NEWLINE# for ( ( c1 , f1 ) , ( c2 , f2 ) ) in top : #NEWLINE# #INDENT# print ( ( '\t%.4f\t%-15s\t\t%.4f\t%-15s' % ( c1 , f1 , c2 , f2 ) ) )