Update log statement

Author: jsingh811

pyAudioProcessing/run_classification.py

@@ -96,6 +96,8 @@ def classify_data(data_dirs, feature_names, classifier, classifier_name):
             indx = list(res[1]).index(max(res[1]))
             if res[2][indx] == fol.split("/")[-1]:
                 correctly_classified += 1
+        if correctly_classified == 0:
+            print("Either you passed in data with unknown classes, or")
         print(
             "{} out of {} instances were classified correctly".format(
                 correctly_classified, num_files