{Core} Aladdin recommendation improvements

src/azure-cli-core/azure/cli/core/_help.py

@@ -202,10 +202,11 @@ def strip_command(command):
 
         examples = []
         for example in help_file.examples:
-            examples.append({
-                'command': strip_command(example.command),
-                'description': example.name
-            })
+            if example.command and example.name:
+                examples.append({
+                    'command': strip_command(example.command),
+                    'description': example.name
+                })
 
         return examples
 

src/azure-cli-core/azure/cli/core/command_recommender.py

@@ -154,7 +154,7 @@ def _set_aladdin_recommendations(self):  # pylint: disable=too-many-locals
                 context['subscriptionId'] = subscription_id
 
         parameters = self._normalize_parameters(self.parameters)
-        parameters = [item for item in parameters if item not in ['--debug', '--verbose', '--only-show-errors']]
+        parameters = [item for item in set(parameters) if item not in ['--debug', '--verbose', '--only-show-errors']]
         query = {
             "command": self.command,
             "parameters": ','.join(parameters)
@@ -294,7 +294,10 @@ def replace_param_values(command):  # pylint: disable=unused-variable
 
             # generate decorated commands shown to users
             decorated_command = highlight_command(raw_command)
-            decorated_description = [(Style.SECONDARY, recommendation['description'] + '\n')]
+            decorated_description = [(
+                Style.SECONDARY,
+                recommendation.get('description', 'No description is found.') + '\n'
+            )]
             decorated_recommendations.append((decorated_command, decorated_description))
 
         # add reference link as a recommendation