Merge remote-tracking branch 'gitlab/merge-requests/26' into maint-1.1

sbws/lib/scaling.py

@@ -14,6 +14,10 @@ def bw_filt(bw_measurements):
     It is the equivalent to Torflow's ``filt_sbw``.
     ``mu`` in this function is the equivalent to Torflow's ``sbw``.
     """
-    mu = mean(bw_measurements)
-    bws_gte_mean = filter(lambda bw: bw >= mu, bw_measurements)
-    return mean(bws_gte_mean)
+    mu = 1
+    if bw_measurements:
+        mu = mean(bw_measurements)
+    bws_gte_mean = list(filter(lambda bw: bw >= mu, bw_measurements))
+    if bws_gte_mean:
+        return mean(bws_gte_mean)
+    return 1

sbws/lib/v3bwfile.py

@@ -869,13 +869,19 @@ class V3BWLine(object):
 
     @staticmethod
     def bw_median_from_results(results):
-        return max(round(median([dl['amount'] / dl['duration']
-                                 for r in results for dl in r.downloads])), 1)
+        bws = [dl['amount'] / dl['duration']
+               for r in results for dl in r.downloads]
+        if bws:
+            return max(round(median(bws)), 1)
+        return 1
 
     @staticmethod
     def bw_mean_from_results(results):
-        return max(round(mean([dl['amount'] / dl['duration']
-                               for r in results for dl in r.downloads])), 1)
+        bws = [dl['amount'] / dl['duration']
+               for r in results for dl in r.downloads]
+        if bws:
+            return max(round(mean(bws)), 1)
+        return 1
 
     @staticmethod
     def last_time_from_results(results):