Use operator.itemgetter instead of lambda when possible

glances/core/glances_processes.py

@@ -19,6 +19,7 @@
 
 # Import Python lib
 import collections
+import operator
 import re
 
 # Import psutil
@@ -709,11 +710,11 @@ class GlancesProcesses(object):
                                       process[sortedby][3],
                                       reverse=sortedreverse)
             except Exception:
-                self.processlist.sort(key=lambda process: process['cpu_percent'],
+                self.processlist.sort(key=operator.itemgetter('cpu_percent'),
                                       reverse=sortedreverse)
         else:
             # Others sorts
-            self.processlist.sort(key=lambda process: process[sortedby],
+            self.processlist.sort(key=operator.itemgetter(sortedby),
                                   reverse=sortedreverse)
 
         return self.processlist

glances/plugins/glances_diskio.py

@@ -19,6 +19,8 @@
 
 """Disk I/O plugin."""
 
+import operator
+
 import psutil
 
 # Import Glances libs
@@ -134,7 +136,7 @@ class Plugin(GlancesPlugin):
         msg = '{0:>7}'.format(_("W/s"))
         ret.append(self.curse_add_line(msg))
         # Disk list (sorted by name)
-        for i in sorted(self.stats, key=lambda diskio: diskio['disk_name']):
+        for i in sorted(self.stats, key=operator.itemgetter('disk_name')):
             # Do not display hidden interfaces
             if self.is_hide(i['disk_name']):
                 continue

glances/plugins/glances_fs.py

@@ -19,6 +19,8 @@
 
 """File system plugin."""
 
+import operator
+
 import psutil
 
 from glances.plugins.glances_plugin import GlancesPlugin
@@ -181,7 +183,7 @@ class Plugin(GlancesPlugin):
         ret.append(self.curse_add_line(msg))
 
         # Disk list (sorted by name)
-        for i in sorted(self.stats, key=lambda fs: fs['mnt_point']):
+        for i in sorted(self.stats, key=operator.itemgetter('mnt_point')):
             # New line
             ret.append(self.curse_new_line())
             if i['device_name'] == '' or i['device_name'] == 'none':

glances/plugins/glances_network.py

@@ -20,6 +20,7 @@
 """Network plugin."""
 
 import base64
+import operator
 
 import psutil
 
@@ -223,7 +224,7 @@ class Plugin(GlancesPlugin):
                 msg = '{0:>7}'.format(_("Tx/s"))
                 ret.append(self.curse_add_line(msg))
         # Interface list (sorted by name)
-        for i in sorted(self.stats, key=lambda network: network['interface_name']):
+        for i in sorted(self.stats, key=operator.itemgetter('interface_name')):
             # Do not display hidden interfaces
             if self.is_hide(i['interface_name']):
                 continue

glances/plugins/glances_processlist.py

@@ -20,6 +20,7 @@
 """Process list plugin."""
 
 # Import sys libs
+import operator
 import os
 from datetime import timedelta
 
@@ -429,7 +430,7 @@ class Plugin(GlancesPlugin):
                                 process[sortedby][3],
                                 reverse=sortedreverse)
             except Exception:
-                self.stats.sort(key=lambda process: process['cpu_percent'],
+                self.stats.sort(key=operator.itemgetter('cpu_percent'),
                                 reverse=sortedreverse)
         else:
             # Others sorts
@@ -437,10 +438,10 @@ class Plugin(GlancesPlugin):
                 self.stats.set_sorting(sortedby, sortedreverse)
             else:
                 try:
-                    self.stats.sort(key=lambda process: process[sortedby],
+                    self.stats.sort(key=operator.itemgetter(sortedby),
                                     reverse=sortedreverse)
                 except (KeyError, TypeError):
-                    self.stats.sort(key=lambda process: process['name'],
+                    self.stats.sort(key=operator.itemgetter('name'),
                                     reverse=False)
 
         return self.stats