diff --git a/log.py b/log.py
new file mode 100644
index 0000000..fdef091
--- /dev/null
+++ b/log.py
@@ -0,0 +1,21 @@
+import os
+import sys
+import datetime
+
+
+def _log(x):
+    dt_str = datetime.datetime.now().strftime("%H:%M:%S")
+    pref = dt_str + " " + str(os.getpid()) + " >>>> "
+    sys.stderr.write(pref + x.replace("\n", "\n" + pref) + "\n")
+
+
+logger = _log
+
+
+def log(x):
+    logger(x)
+
+
+def setlogger(nlogger):
+    global logger
+    logger = nlogger