diff --git a/tests/base.py b/tests/base.py
index 585f2d2..de5601b 100755
--- a/tests/base.py
+++ b/tests/base.py
@@ -1296,9 +1296,8 @@
         start = time.time()
         while True:
             if time.time() - start > 10:
-                print 'queue status:',
-                print ' '.join(self.eventQueuesEmpty())
-                print self.areAllBuildsWaiting()
+                print('queue status:', ''.join(self.eventQueuesEmpty()))
+                print(self.areAllBuildsWaiting())
                 raise Exception("Timeout waiting for Zuul to settle")
             # Make sure no new events show up while we're checking
             self.worker.lock.acquire()
@@ -1336,8 +1335,8 @@
         for pipeline in self.sched.layout.pipelines.values():
             for queue in pipeline.queues:
                 if len(queue.queue) != 0:
-                    print 'pipeline %s queue %s contents %s' % (
-                        pipeline.name, queue.name, queue.queue)
+                    print('pipeline %s queue %s contents %s' % (
+                        pipeline.name, queue.name, queue.queue))
                 self.assertEqual(len(queue.queue), 0,
                                  "Pipelines queues should be empty")
 
diff --git a/tests/test_layoutvalidator.py b/tests/test_layoutvalidator.py
index 3dc3234..3de4a94 100644
--- a/tests/test_layoutvalidator.py
+++ b/tests/test_layoutvalidator.py
@@ -33,13 +33,13 @@
 class TestLayoutValidator(testtools.TestCase):
     def test_layouts(self):
         """Test layout file validation"""
-        print
+        print()
         errors = []
         for fn in os.listdir(os.path.join(FIXTURE_DIR, 'layouts')):
             m = LAYOUT_RE.match(fn)
             if not m:
                 continue
-            print fn
+            print(fn)
 
             # Load any .conf file by the same name but .conf extension.
             config_file = ("%s.conf" %
@@ -69,7 +69,7 @@
                                     fn)
                 except voluptuous.Invalid as e:
                     error = str(e)
-                    print '  ', error
+                    print('  ', error)
                     if error in errors:
                         raise Exception("Error has already been tested: %s" %
                                         error)
diff --git a/tests/test_scheduler.py b/tests/test_scheduler.py
index 15d33c8..053b1cc 100755
--- a/tests/test_scheduler.py
+++ b/tests/test_scheduler.py
@@ -1484,7 +1484,7 @@
         self.worker.build_history = []
 
         path = os.path.join(self.git_root, "org/project")
-        print repack_repo(path)
+        print(repack_repo(path))
 
         A = self.fake_gerrit.addFakeChange('org/project', 'master', 'A')
         A.addApproval('CRVW', 2)
@@ -1509,9 +1509,9 @@
         A = self.fake_gerrit.addFakeChange('org/project1', 'master', 'A')
         A.addPatchset(large=True)
         path = os.path.join(self.upstream_root, "org/project1")
-        print repack_repo(path)
+        print(repack_repo(path))
         path = os.path.join(self.git_root, "org/project1")
-        print repack_repo(path)
+        print(repack_repo(path))
 
         A.addApproval('CRVW', 2)
         self.fake_gerrit.addEvent(A.addApproval('APRV', 1))
diff --git a/tools/zuul-changes.py b/tools/zuul-changes.py
index 9dbf504..8b854c7 100755
--- a/tools/zuul-changes.py
+++ b/tools/zuul-changes.py
@@ -35,7 +35,7 @@
                 if not change['live']:
                     continue
                 cid, cps = change['id'].split(',')
-                print (
+                print(
                     "zuul enqueue --trigger gerrit --pipeline %s "
                     "--project %s --change %s,%s" % (
                         options.pipeline_name,
diff --git a/zuul/cmd/client.py b/zuul/cmd/client.py
index 59ac419..1ce2828 100644
--- a/zuul/cmd/client.py
+++ b/zuul/cmd/client.py
@@ -154,7 +154,7 @@
         running_items = client.get_running_jobs()
 
         if len(running_items) == 0:
-            print "No jobs currently running"
+            print("No jobs currently running")
             return True
 
         all_fields = self._show_running_jobs_columns()
@@ -181,7 +181,7 @@
                         v += all_fields[f]['append']
                     values.append(v)
                 table.add_row(values)
-        print table
+        print(table)
         return True
 
     def _epoch_to_relative_time(self, epoch):
diff --git a/zuul/cmd/launcher.py b/zuul/cmd/launcher.py
index 2ba4b85..bbda87d 100644
--- a/zuul/cmd/launcher.py
+++ b/zuul/cmd/launcher.py
@@ -99,7 +99,7 @@
                 try:
                     signal.pause()
                 except KeyboardInterrupt:
-                    print "Ctrl + C: asking launcher to exit nicely...\n"
+                    print("Ctrl + C: asking launcher to exit nicely...\n")
                     self.exit_handler()
                     sys.exit(0)
 
diff --git a/zuul/cmd/merger.py b/zuul/cmd/merger.py
index df215fd..797a990 100644
--- a/zuul/cmd/merger.py
+++ b/zuul/cmd/merger.py
@@ -68,7 +68,7 @@
             try:
                 signal.pause()
             except KeyboardInterrupt:
-                print "Ctrl + C: asking merger to exit nicely...\n"
+                print("Ctrl + C: asking merger to exit nicely...\n")
                 self.exit_handler(signal.SIGINT, None)
 
 
@@ -89,9 +89,7 @@
         f.close()
         os.unlink(test_fn)
     except Exception:
-        print
-        print "Unable to write to state directory: %s" % state_dir
-        print
+        print("\nUnable to write to state directory: %s\n" % state_dir)
         raise
 
     if server.config.has_option('merger', 'pidfile'):
diff --git a/zuul/cmd/server.py b/zuul/cmd/server.py
index 6db15a2..f400436 100755
--- a/zuul/cmd/server.py
+++ b/zuul/cmd/server.py
@@ -107,7 +107,7 @@
                 jobs.add(v)
         for job in sorted(layout.jobs):
             if job not in jobs:
-                print "Job %s not defined" % job
+                print("Job %s not defined" % job)
                 failure = True
         return failure
 
@@ -196,7 +196,7 @@
             try:
                 signal.pause()
             except KeyboardInterrupt:
-                print "Ctrl + C: asking scheduler to exit nicely...\n"
+                print("Ctrl + C: asking scheduler to exit nicely...\n")
                 self.exit_handler(signal.SIGINT, None)