diff --git a/base.py b/base.py
index 1008fe3..d2e39b2 100644
--- a/base.py
+++ b/base.py
@@ -1,6 +1,24 @@
+import sys
 import time
 import logging
 
+ONEYEAR = 366 * 24 * 3600
+
+
+def get_abs_time(times):
+    """
+    Gets the absolute times for the given potential relative times. If a given timestamp is less than
+    one year, then the value is relative and converted into an absolute timestamp
+
+    Parameters :
+        times([(float)]) : an array of unix timestamps or relative duration (< 1 year) as floats
+
+    Returns :
+        [(float)] : an array of absolute unix timestamps as floats
+    """
+    now = int(time.time() + 0.999)
+    return [t + now if t < ONEYEAR else t for t in times]
+
 
 class Logger(object):
     def __init__(self, logpath):
@@ -17,7 +35,7 @@ class Logger(object):
 
 class Instrument:
     def __init__(self):
-        pass
+        self.clients = {}
 
     def remove(self, client):
         try:
@@ -28,9 +46,3 @@ class Instrument:
     def register(self, client):
         self.clients[client.id] = client
         return client
-
-
-def get_abs_time(times):
-    now = int(time.time() + 0.999)
-    oneyear = 365 * 24 * 3600
-    return [t + now if t < oneyear else t for t in times]