add file_update_time.py

python/file_update_time/file_update_time.py

+import os
+import time
+
+data_root = "training_data"
+dir_sttime = {}
+for f in os.listdir(data_root):
+    dir_sttime[f] = os.stat(os.path.join(data_root, f)).st_mtime - time.time()
+for f, t in sorted(dir_sttime.items(), key=lambda x: x[1], reverse=True):
+    if t < 3600.0:
+        print "file %s: update %.1f seconds ago"%(f,t)
+    elif t/3600.0 < 24.0:
+        print "file %s: update %.1f hours ago"%(f,t/3600.0)
+    else :
+        print "file %s: update %.1f days ago"%(f,t/3600.0/24.0)