fix isort

Change-Id: I5486e1f9b3143c6bb0804c49c7ca21adb9b84de1
Reviewed-on: https://forge.frm2.tum.de/review/19524
Reviewed-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>
Tested-by: Enrico Faulhaber <enrico.faulhaber@frm2.tum.de>

secop/lib/sequence.py

@@ -23,10 +23,12 @@
 
 """Utilities for modules that require sequenced actions on value change."""
 
+from __future__ import division, print_function
+
 from time import sleep
 
-from secop.lib import mkthread
 from secop.errors import IsBusyError
+from secop.lib import mkthread
 
 
 class Namespace(object):