Use collections.Counter instead of manually

find_reduced.py

@@ -8,7 +8,7 @@ if len(sys.argv) != 2:
 
 import os
 from os import path
-from collections import defaultdict
+from collections import Counter, defaultdict
 from subprocess import Popen, PIPE
 from functools import cmp_to_key
 from datetime import datetime
@@ -208,12 +208,7 @@ for d in debian_names:
 
 sys.stderr.write("%s\n%s\n"%(list(set(missing_deb_mappings)),list(set(missing_gen_mappings))))
 
-drop_freq = dict()
-for p in all_droppable:
-    if drop_freq.get(p):
-        drop_freq[p] += 1
-    else:
-        drop_freq[p] = 1
+drop_freq = Counter(all_droppable)
 
-for k in sorted(drop_freq.keys(), key=drop_freq.__getitem__, reverse=True)[:20]:
-    sys.stderr.write("%s: %s\n"%(k, drop_freq[k]))
+for package, freq in drop_freq.most_common(20):
+    sys.stderr.write("%s: %s\n"%(package, freq))