Update hacking for Python3

The repo is Python 3 now, so update hacking to version 3.0 which
supports Python 3.

Fix problems found.

Remove hacking and friends from lower-constraints, they are not
installed in a running system.

Change-Id: Ia62b221aa0807300eaee7b075607ac6b56256b76

lower-constraints.txt

@@ -25,9 +25,7 @@ dulwich==0.19.0
 extras==1.0.0
 fasteners==0.14.1
 fixtures==3.0.0
-flake8==2.5.5
 futurist==1.6.0
-hacking==0.12.0
 horizon==17.1.0
 idna==2.6
 imagesize==1.0.0
@@ -64,11 +62,9 @@ oslo.utils==3.33.0
 osprofiler==2.0.0
 packaging==17.1
 pbr==2.0.0
-pep8==1.5.7
 Pint==0.8.1
 prettytable==0.7.2
 pycparser==2.18
-pyflakes==0.8.1
 Pygments==2.2.0
 pyinotify==0.9.6
 pymongo==3.6.1

manila_ui/dashboards/admin/shares/replicas/tables.py

@@ -122,7 +122,7 @@ class DeleteReplica(tables.DeleteAction):
             replicas = manila.share_replica_list(request, replica.share_id)
             if share.replication_type is None:
                 return False
-            elif (share.replication_type is 'writable' and
+            elif (share.replication_type == 'writable' and
                   replica.status in DELETABLE_STATUSES and
                   len(replicas) > 1) or (
                       share.replication_type in ('dr', 'readable') and

manila_ui/dashboards/project/shares/replicas/tables.py

@@ -108,7 +108,7 @@ class DeleteReplica(tables.DeleteAction):
             replicas = manila.share_replica_list(request, replica.share_id)
             if share.replication_type is None:
                 return False
-            elif (share.replication_type is 'writable' and
+            elif (share.replication_type == 'writable' and
                   replica.status in DELETABLE_STATUSES and
                   len(replicas) > 1) or (
                       share.replication_type in ('dr', 'readable') and

manila_ui/dashboards/utils.py

@@ -44,7 +44,7 @@ def parse_str_meta(meta_s):
     for string in strings:
         if string.count("=") == 0:
             # Key for unsetting
-            key = string.strip('\"\'\ ')
+            key = string.strip(r'\"\' ')
             if len(key) not in range(1, 256):
                 msg = _("Key '%s' has improper length.") % key
             elif " " in key:
@@ -53,7 +53,7 @@ def parse_str_meta(meta_s):
                 unset_list.append(key)
         else:
             # Key-value pair for setting
-            pair = [p.strip('\"\'\ ') for p in string.split("=", 1)]
+            pair = [p.strip(r'\"\' ') for p in string.split("=", 1)]
             if not all(len(p) in range(1, 256) for p in pair):
                 msg = _("All keys and values must be in range from 1 to 255.")
             elif pair[0] in list(set_dict.keys()):

manila_ui/tests/test_data/keystone_data.py

@@ -25,6 +25,7 @@ def data(TEST):
               "publicURL": "http://public.manila.example.com:8786/v1"}]},
     )
 
+
 projects = [
     type("%sProject" % v, (object, ),
          {'id': '%s_id' % v, 'name': '%s_name' % v})

test-requirements.txt

@@ -2,7 +2,7 @@
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
 
-hacking>=1.1.0,<1.2.0 # Apache-2.0
+hacking>=3.0,<3.1.0 # Apache-2.0
 coverage!=4.4,>=4.0 # Apache-2.0
 ddt>=1.0.1 # MIT
 mock>=2.0.0 # BSD

tox.ini

@@ -79,7 +79,8 @@ show-source = True
 # F405 TEMPLATES may be undefined, or defined from star imports
 # (because it is not easy to avoid this in openstack_dashboard.test.settings)
 # H405 multi line docstring summary not separated with an empty line
-ignore = E123,E125,F405,H405
+# W504 line break after binary operator
+ignore = E123,E125,F405,H405,W504
 enable-extensions = H203,H106
 exclude=.venv,.git,.tox,dist,doc,*lib/python*,*egg,build,.ropeproject,tools