remove unicode literal from code

All strings are considered as unicode string from Python 3.

This patch drops the explicit unicode literal (u'...')
appearances from the unicode strings.

Change-Id: I2e833d293130aff983f3124853df0bd2ed553def

doc/source/conf.py

@@ -82,8 +82,8 @@ openstackdocs_auto_name = False
 openstackdocs_repo_name = 'openstack/freezer'
 openstackdocs_bug_project = 'freezer'
 openstackdocs_bug_tag = 'doc'
-project = u'Freezer'
-copyright = u'OpenStack Foundation'
+project = 'Freezer'
+copyright = 'OpenStack Foundation'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
@@ -144,11 +144,11 @@ modindex_common_prefix = ['freezer.']
 # -- Options for man page output ----------------------------------------------
 
 # Grouping the document tree for man pages.
-# List of tuples 'sourcefile', 'target', u'title', u'Authors name', 'manual'
+# List of tuples 'sourcefile', 'target', 'title', 'Authors name', 'manual'
 
 man_pages = [
-    ('man/freezer-manage', 'freezer-manage', u'Cloud controller fabric',
-     [u'OpenStack'], 1)
+    ('man/freezer-manage', 'freezer-manage', 'Cloud controller fabric',
+     ['OpenStack'], 1)
 ]
 
 # -- Options for HTML output --------------------------------------------------

freezer/snapshot/lvm.py

@@ -258,7 +258,7 @@ def lvm_guess(mount_point_path, mount_points, source='/proc/mounts'):
             if mount_match:
                 lvm_volgroup = mount_match.group(1).replace('--', '-')
                 lvm_srcvol = mount_match.group(2).replace('--', '-')
-                lvm_device = u'/dev/{0}/{1}'.format(lvm_volgroup, lvm_srcvol)
+                lvm_device = '/dev/{0}/{1}'.format(lvm_volgroup, lvm_srcvol)
                 break
 
     return lvm_volgroup, lvm_srcvol, lvm_device

freezer/storage/swift.py

@@ -115,8 +115,8 @@ class SwiftStorage(physical.PhysicalStorage):
         LOG.info('[*] Uploading Swift Manifest: {0}'.format(backup))
         split = backup.data_path.rsplit('/', 1)
         self.swift().put_object(container=split[0], obj=split[1],
-                                contents=u'', headers=headers,
-                                content_length=len(u''))
+                                contents='', headers=headers,
+                                content_length=len(''))
         LOG.info('Manifest successfully uploaded!')
 
     def prepare(self):
@@ -175,8 +175,8 @@ class SwiftStorage(physical.PhysicalStorage):
         objname = package_name.rsplit('/', 1)[1]
         # This call sets the metadata on a file which will be used to download
         # the whole backup later. Do not remove it ! (szaher)
-        self.swift().put_object(container=full_path, obj=objname, contents=u'',
-                                content_length=len(u''), headers=headers)
+        self.swift().put_object(container=full_path, obj=objname, contents='',
+                                content_length=len(''), headers=headers)
 
     def backup_blocks(self, backup):
         """
@@ -207,7 +207,7 @@ class SwiftStorage(physical.PhysicalStorage):
         """
         backup = backup.copy(storage=self)
         for block_index, message in enumerate(rich_queue.get_messages()):
-            segment_package_name = u'{0}/{1}'.format(
+            segment_package_name = '{0}/{1}'.format(
                 backup.segments_path, "%08d" % block_index)
             self.upload_chunk(message, segment_package_name)
         self.upload_manifest(backup)

freezer/utils/utils.py

@@ -543,9 +543,9 @@ def set_max_process_priority():
         os.nice(-19)
         # Set I/O Priority to Real Time class with level 0
         subprocess.call([
-            u'{0}'.format(find_executable("ionice")),
-            u'-c', u'1', u'-n', u'0', u'-t',
-            u'-p', u'{0}'.format(pid)
+            '{0}'.format(find_executable("ionice")),
+            '-c', '1', '-n', '0', '-t',
+            '-p', '{0}'.format(pid)
         ])
     except Exception as priority_error:
         LOG.warning('Priority: {0}'.format(priority_error))

releasenotes/source/conf.py

@@ -58,7 +58,7 @@ source_suffix = '.rst'
 master_doc = 'index'
 
 # General information about the project.
-copyright = u'2016, Freezer developers'
+copyright = '2016, Freezer developers'
 
 # Release notes are version independent.
 # The short X.Y version.
@@ -194,8 +194,8 @@ htmlhelp_basename = 'FreezerReleaseNotestdoc'
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
-  ('index', 'PythonFreezer.tex', u'Freezer Release Notes Documentation',
-   u'Freezer developers', 'manual'),
+  ('index', 'PythonFreezer.tex', 'Freezer Release Notes Documentation',
+   'Freezer developers', 'manual'),
 ]
 
 # The name of an image file (relative to this directory) to place at the top of
@@ -225,8 +225,8 @@ latex_documents = [
 # (source start file, name, description, authors, manual section).
 man_pages = [
     ('index', 'freezer',
-     u'Freezer Release Notes Documentation',
-     [u'Freezer developers'], 1)
+     'Freezer Release Notes Documentation',
+     ['Freezer developers'], 1)
 ]
 
 # If true, show URL addresses after external links.
@@ -240,8 +240,8 @@ man_pages = [
 #  dir menu entry, description, category)
 texinfo_documents = [
   ('index', 'Freezer',
-   u'Freezer Release Notes Documentation',
-   u'Freezer developers', 'Freezer',
+   'Freezer Release Notes Documentation',
+   'Freezer developers', 'Freezer',
    'One line description of project.', 'Miscellaneous'),
 ]