Adding a plotting switch and changes made as suggested by So-Cool.

conf/cuckooml.conf

@@ -38,3 +38,6 @@ compare_new_samples = true
 
 # Set folder for samples to be compared against clustering
 test_directory = sample_data/test
+
+# Enable plotting functionality
+plotting = true

modules/processing/cuckooml.py

@@ -15,11 +15,24 @@
 from lib.cuckoo.common.constants import CUCKOO_ROOT
 from math import log
 
+global PLOTTING_LIBRARIES_IMPORTED 
+PLOTTING_LIBRARIES_IMPORTED = False
+
+if Config("cuckooml").cuckooml.plotting:
+    try:
+        import matplotlib.pyplot as plt
+        import seaborn as sns
+        PLOTTING_LIBRARIES_IMPORTED = True
+    except ImportError, e:
+        print >> sys.stderr, "Plotting libraries \
+            (matplotlib and seaborn) are not available."
+        print >> sys.stderr, e
+        PLOTTING_LIBRARIES_IMPORTED = False
+
+
 try:
-    import matplotlib.pyplot as plt
     import numpy as np
     import pandas as pd
-    import seaborn as sns
     from hdbscan import HDBSCAN
     from sklearn import metrics
     from sklearn.cluster import DBSCAN
@@ -797,6 +810,19 @@ def filter_dataset(self, dataset=None, feature_coverage=0.1,
 
     def detect_abnormal_behaviour(self, count_dataset=None, figures=True):
         """Detect samples that behave significantly different than others."""
+
+    	# Safety check for plotting	
+        if not PLOTTING_LIBRARIES_IMPORTED and figures:
+            print >> sys.stderr, "Warning: plotting libraries were not imported. \n" \
+                                  "Plots wont be produced."       
+
+            if not Config("cuckooml").cuckooml.plotting: 
+                print >> sys.stderr, " Plotting is disabled in cuckooml config."
+            else:
+                print >> sys.stderr, "Plotting libraries are missing."
+            figures = False
+
+
         if count_dataset is None:
             # Pull all count features
             count_features = self.feature_category(":count:")
@@ -1133,6 +1159,18 @@ def performance_metric(clustering, labels, data, noise):
 
     def clustering_label_distribution(self, clustering, labels, plot=False):
         """Get statistics about number of ground truth labels per cluster."""
+
+        # Safety check for plotting
+        if not PLOTTING_LIBRARIES_IMPORTED and plot:
+            print >> sys.stderr, "Warning: plotting libraries were not imported. \n" \
+                                  "Plots wont be produced."       
+
+            if not Config("cuckooml").cuckooml.plotting: 
+                print >> sys.stderr, " Plotting is disabled in cuckooml config."
+            else:
+                print >> sys.stderr, "Plotting libraries are missing."
+            plot = False
+
         cluster_ids = set(clustering["label"].tolist())
         labels_ids = set(labels["label"].tolist())
         cluster_distribution = {}