diff --git a/doc/source/conf.py b/doc/source/conf.py
index 0a1ab982..e4764e32 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -215,7 +215,7 @@ htmlhelp_basename = target_name + '-docs'
 #  author, documentclass [howto, manual, or own class]).
 latex_documents = [
     (master_doc, 'doc-' + target_name + '.tex',
-     title.replace("_", "\_"), author, 'manual'),
+     title.replace("_", r"\_"), author, 'manual'),
 ]
 
 latex_use_xindy = False
diff --git a/library/provider_networks b/library/provider_networks
index f219669f..da0c85f8 100644
--- a/library/provider_networks
+++ b/library/provider_networks
@@ -17,7 +17,7 @@
 
 
 # import module snippets
-from ansible.module_utils.basic import *
+from ansible.module_utils.basic import AnsibleModule
 
 
 DOCUMENTATION = """
@@ -216,8 +216,8 @@ class ProviderNetworksParsing(object):
                 if (
                     set(
                         net["network"]["group_binds"]
-                    ).intersection(group_names) or
-                    "neutron_server" in group_names
+                    ).intersection(group_names)
+                    or "neutron_server" in group_names    # noqa W503
                 ):
                     if "vlan" not in self.network_types:
                         self.network_types.append('vlan')
@@ -239,8 +239,8 @@ class ProviderNetworksParsing(object):
                 if (
                     set(
                         net["network"]["group_binds"]
-                    ).intersection(group_names) or
-                    "neutron_server" in group_names
+                    ).intersection(group_names)
+                    or "neutron_server" in group_names  # noqa W503
                 ):
                     if "flat" not in self.network_types:
                         self.network_types.append('flat')
diff --git a/tasks/providers/setup_ovs_opendaylight.yml b/tasks/providers/setup_ovs_opendaylight.yml
index e0885dc3..d8599a7b 100644
--- a/tasks/providers/setup_ovs_opendaylight.yml
+++ b/tasks/providers/setup_ovs_opendaylight.yml
@@ -23,11 +23,11 @@
 
 - name: Set ODL as OvS manager
   command: ovs-vsctl set-manager {{ ovs_manager_list }}
-  when: ovs_manager.stdout == ""
+  when: ovs_manager.stdout | length == 0
 
 - name: Configure hosts for networking-odl, force kernel datapath
   command: "{{ neutron_bin }}/neutron-odl-ovs-hostconfig --noovs_dpdk {% if neutron_provider_networks.network_mappings is defined and 'odl-router_v2' in neutron_plugin_base or 'odl-router' in neutron_plugin_base %}--datapath_type=system --bridge_mappings={{ neutron_provider_networks.network_mappings }} {% endif %}"
-  when: ovs_manager.stdout == ""
+  when: ovs_manager.stdout | length == 0
 
 - name: Retrieve current OvS local ip
   command: ovs-vsctl get Open_vSwitch . other_config:local_ip