--- a/misc/scripts/detect_cycle.py	Fri Sep 11 14:28:06 2015 +0200
+++ b/misc/scripts/detect_cycle.py	Fri Sep 11 14:52:09 2015 +0200
@@ -1,9 +1,10 @@
+from __future__ import print_function
 
 try:
     rtype, = __args__
 except ValueError:
-    print 'USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>'
-    print
+    print('USAGE: cubicweb-ctl shell <instance> detect_cycle.py -- <relation type>')
+    print()
 
 graph = {}
 for fromeid, toeid in rql('Any X,Y WHERE X %s Y' % rtype):
@@ -12,4 +13,4 @@
 from logilab.common.graph import get_cycles
 
 for cycle in get_cycles(graph):
-    print 'cycle', '->'.join(str(n) for n in cycle)
+    print('cycle', '->'.join(str(n) for n in cycle))