Don't construct empty lists in tests

glances/outputs/glances_curses.py

@@ -664,7 +664,7 @@ class _GlancesCurses(object):
         # Exit if:
         # - the plugin_stats message is empty
         # - the display tag = False
-        if plugin_stats['msgdict'] == [] or not plugin_stats['display']:
+        if not plugin_stats['msgdict'] or not plugin_stats['display']:
             # Exit
             return 0
 

glances/plugins/glances_alert.py

@@ -67,7 +67,7 @@ class Plugin(GlancesPlugin):
 
         # Build the string message
         # Header
-        if self.stats == []:
+        if not self.stats:
             msg = _("No warning or critical alert detected")
             ret.append(self.curse_add_line(msg, "TITLE"))
         else:

glances/plugins/glances_batpercent.py

@@ -103,7 +103,7 @@ class GlancesGrabBat(object):
 
     def getcapacitypercent(self):
         """Get batteries capacity percent."""
-        if not self.initok or self.bat.stat == []:
+        if not self.initok or not self.bat.stat:
             return []
 
         # Init the bsum (sum of percent)

glances/plugins/glances_diskio.py

@@ -122,7 +122,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_diskio:
+        if not self.stats or args.disable_diskio:
             return ret
 
         # Build the string message

glances/plugins/glances_fs.py

@@ -158,7 +158,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_fs:
+        if not self.stats or args.disable_fs:
             return ret
 
         # Max size for the fsname name

glances/plugins/glances_monitor.py

@@ -88,7 +88,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_process:
+        if not self.stats or args.disable_process:
             return ret
 
         # Build the string message

glances/plugins/glances_network.py

@@ -185,7 +185,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_network:
+        if not self.stats or args.disable_network:
             return ret
 
         # Max size for the interface name

glances/plugins/glances_percpu.py

@@ -130,7 +130,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # No per CPU stat ? Exit...
-        if self.stats == []:
+        if not self.stats:
             msg = _("PER CPU not available")
             ret.append(self.curse_add_line(msg, "TITLE"))
             return ret

glances/plugins/glances_processlist.py

@@ -355,7 +355,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_process:
+        if not self.stats or args.disable_process:
             return ret
 
         # Compute the sort key

glances/plugins/glances_sensors.py

@@ -125,7 +125,7 @@ class Plugin(GlancesPlugin):
         ret = []
 
         # Only process if stats exist and display plugin enable...
-        if self.stats == [] or args.disable_sensors:
+        if not self.stats or args.disable_sensors:
             return ret
 
         # Build the string message