Sync oslo-incubator print statement changes

Just changes openstack.common to use the new print statements.

This is in preparation for another sync coming shortly for the
scheduler library.

Change-Id: I17a86ef87f3253d6bb756cbd40a3ff5df9be23ff

nova/openstack/common/eventlet_backdoor.py

@@ -16,6 +16,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+from __future__ import print_function
+
 import gc
 import pprint
 import sys
@@ -37,7 +39,7 @@ CONF.register_opts(eventlet_backdoor_opts)
 
 
 def _dont_use_this():
-    print "Don't use this, just disconnect instead"
+    print("Don't use this, just disconnect instead")
 
 
 def _find_objects(t):
@@ -46,16 +48,16 @@ def _find_objects(t):
 
 def _print_greenthreads():
     for i, gt in enumerate(_find_objects(greenlet.greenlet)):
-        print i, gt
+        print(i, gt)
         traceback.print_stack(gt.gr_frame)
-        print
+        print()
 
 
 def _print_nativethreads():
     for threadId, stack in sys._current_frames().items():
-        print threadId
+        print(threadId)
         traceback.print_stack(stack)
-        print
+        print()
 
 
 def initialize_if_enabled():

nova/openstack/common/setup.py

@@ -20,6 +20,8 @@
 Utilities with minimum-depends for use in setup.py
 """
 
+from __future__ import print_function
+
 import email
 import os
 import re
@@ -232,7 +234,7 @@ def get_cmdclass():
             builders = ['html', 'man']
 
             def generate_autoindex(self):
-                print "**Autodocumenting from %s" % os.path.abspath(os.curdir)
+                print("**Autodocumenting from %s" % os.path.abspath(os.curdir))
                 modules = {}
                 option_dict = self.distribution.get_option_dict('build_sphinx')
                 source_dir = os.path.join(option_dict['source_dir'][1], 'api')
@@ -257,7 +259,7 @@ def get_cmdclass():
                         values = dict(module=module, heading=heading,
                                       underline=underline)
 
-                        print "Generating %s" % output_filename
+                        print("Generating %s" % output_filename)
                         with open(output_filename, 'w') as output_file:
                             output_file.write(_rst_template % values)
                         autoindex.write("   %s.rst\n" % module)

tools/install_venv_common.py

@@ -24,6 +24,8 @@ environment, it should be kept strictly compatible with Python 2.6.
 Synced in from openstack-common
 """
 
+from __future__ import print_function
+
 import optparse
 import os
 import subprocess
@@ -42,7 +44,7 @@ class InstallVenv(object):
         self.project = project
 
     def die(self, message, *args):
-        print >> sys.stderr, message % args
+        print(message % args, file=sys.stderr)
         sys.exit(1)
 
     def check_python_version(self):
@@ -89,20 +91,20 @@ class InstallVenv(object):
         virtual environment.
         """
         if not os.path.isdir(self.venv):
-            print 'Creating venv...',
+            print('Creating venv...', end=' ')
             if no_site_packages:
                 self.run_command(['virtualenv', '-q', '--no-site-packages',
                                  self.venv])
             else:
                 self.run_command(['virtualenv', '-q', self.venv])
-            print 'done.'
-            print 'Installing pip in venv...',
+            print('done.')
+            print('Installing pip in venv...', end=' ')
             if not self.run_command(['tools/with_venv.sh', 'easy_install',
                                     'pip>1.0']).strip():
                 self.die("Failed to install pip.")
-            print 'done.'
+            print('done.')
         else:
-            print "venv already exists..."
+            print("venv already exists...")
             pass
 
     def pip_install(self, *args):
@@ -111,7 +113,7 @@ class InstallVenv(object):
                          redirect_output=False)
 
     def install_dependencies(self):
-        print 'Installing dependencies with pip (this can take a while)...'
+        print('Installing dependencies with pip (this can take a while)...')
 
         # First things first, make sure our venv has the latest pip and
         # distribute.
@@ -153,12 +155,12 @@ class Distro(InstallVenv):
             return
 
         if self.check_cmd('easy_install'):
-            print 'Installing virtualenv via easy_install...',
+            print('Installing virtualenv via easy_install...', end=' ')
             if self.run_command(['easy_install', 'virtualenv']):
-                print 'Succeeded'
+                print('Succeeded')
                 return
             else:
-                print 'Failed'
+                print('Failed')
 
         self.die('ERROR: virtualenv not found.\n\n%s development'
                  ' requires virtualenv, please install it using your'