Configure pylance and fix found issues

* provide None for possibly unbound vars
* add extra path to make pylance work properly

Author: cmeissner

.vscode/settings.json

@@ -6,6 +6,7 @@
     "python.linting.enabled": true,
     "restructuredtext.confPath": "${workspaceFolder}/docs",
     "python.analysis.extraPaths": [
-        "./tests/scripts"
+        "./tests/scripts",
+        "build/collections"
     ]
 }

plugins/module_utils/phpipam_helper.py

@@ -206,6 +206,7 @@ def _resolve_entity(self, key):
 
         controller = entity_spec['controller'] or self.controller_uri
 
+        result = None
         if controller == 'subnets':
             subnet, mask = self.phpipam_params[key].split('/')
             result = self.find_subnet(subnet, mask)

plugins/modules/subnet.py

@@ -231,6 +231,7 @@ def main():
         if '/' not in module_params['cidr']:
             module.fail_json(msg='missing prefix lenght in "cidr". Need <ipaddr>/<prefix_lenght>.')
         else:
+            IPNetwork = None
             if '.' in module_params['cidr'] and ':' not in module_params['cidr']:
                 IPNetwork = ipaddress.IPv4Network
                 module_params['mask'] = str(IPNetwork(u'%s' % (module_params['cidr'])).prefixlen)