nicolargo/glances · error · AttributeError

{item}

Error message

{item}

What it means

AttributeError raised by GlancesStats.__getattr__ (glances/stats.py:59) when code calls get_pluginsXXX_views()-style accessors: it resolves plugname from the attribute name, finds the plugin, but the plugin has no get_json_views method, so the fallback raises AttributeError(item). It is the dynamic plugin-dispatch protocol failing to find the expected method on the target plugin.

Source

Thrown at glances/stats.py:59

    def __getattr__(self, item):
        """Overwrite the getattr method in case of attribute is not found.

        The goal is to dynamically generate the following methods:
        - getPlugname(): return Plugname stat in JSON format
        - getViewsPlugname(): return views of the Plugname stat in JSON format
        """
        # Check if the attribute starts with 'get'
        if item.startswith('getViews'):
            # Get the plugin name
            plugname = item[len('getViews') :].lower()
            # Get the plugin instance
            plugin = self._plugins[plugname]
            if hasattr(plugin, 'get_json_views'):
                # The method get_json_views exist, return it
                return getattr(plugin, 'get_json_views')
            # The method get_views is not found for the plugin
            raise AttributeError(item)
        if item.startswith('get'):
            # Get the plugin name
            plugname = item[len('get') :].lower()
            # Get the plugin instance
            plugin = self._plugins[plugname]
            if hasattr(plugin, 'get_json'):
                # The method get_json exist, return it
                return getattr(plugin, 'get_json')
            # The method get_stats is not found for the plugin
            raise AttributeError(item)
        # Default behavior
        raise AttributeError(item)

    def load_modules(self, args):
        """Wrapper to load: plugins and export modules."""

        # Init the plugins dict
        # Active plugins dictionary

View on GitHub (pinned to a240d8dfb3)

Solutions

1. Verify the target plugin class implements get_json_views (standard GlancesPluginModel subclasses do)
2. Fix the accessor name — it must match an actual loaded plugin name exactly
3. Update the custom plugin to inherit from Glances's plugin model
4. Catch AttributeError around dynamic dispatch and skip that plugin

Example fix

# before
views = stats.get_myplugin_views()
# after
fn = getattr(stats, 'get_myplugin_views', None)
views = fn() if fn else {}

fn = getattr(stats, f'get_{name}_views', None)
views = fn() if callable(fn) else {}

def has_views_accessor(stats, plugin: str) -> bool:
    return callable(getattr(stats, f'get_{plugin}_views', None))

try:
    views = getattr(stats, f'get_{name}_views')()
except AttributeError:
    views = {}

When it happens

Trigger: Calling stats.get_XYZ_views (or any get..._views accessor) where plugin XYZ exists but doesn't implement get_json_views — e.g. a plugin not derived from the standard model, or a typo where the plugin name resolves to something unexpected.

Common situations: Custom plugins missing the views API; version mixes where an old plugin lacks get_json_views; typos in dynamically constructed method names.

Related errors

• Cannot get help view data ({str(e)})
• Cannot get plugin {plugin} ({str(e)})
• '{self.__class__.__name__}' object has no key '{item}'
• Plugin {plugin} already in sys.modules, skipping (workaround
• Cannot get plugin list ({str(e)})

AI-assisted analysis of nicolargo/glances@a240d8dfb3 (2026-08-27). Data as JSON: /api/errors/e295b96c28a938bf. Report an issue: GitHub.