@@ -140,8 +140,8 @@ def get_gpu_utilization(self, target):
     result = {}
     if string is not None and string != '':
         for line in string.split(','):
-            key_value = line.split('=')
-            result[key_value[0].strip()] = int(key_value[1]) if key_value[1].isdigit else key_value[1]
+            [key, value] = line.split('=')[:2]
+            result[key.strip()] = int(value) if value.isdigit() else value
     return result
 
 
@@ -152,8 +152,8 @@ def get_performance_modes(self, target):
         for perf in string.split(';'):
             perf_dict = {}
             for line in perf.split(','):
-                key_value = line.split('=')
-                perf_dict[key_value[0].strip()] = int(key_value[1]) if key_value[1].isdigit else key_value[1]
+                [key, value] = line.split('=')[:2]
+                perf_dict[key.strip()] = int(value) if value.isdigit() else value
             result.append(perf_dict)
     return result
 
@@ -288,11 +288,11 @@ def get_fan_rpm(self, target):
 
 
 def get_max_displays(self, target):
-    """return the maximum number of display devices that can be driven
-    simultaneously on a GPU (e.g., that can be used in a MetaMode at once).
-    Note that this does not indicate the maximum number of bits that can be
-    set in NV_CTRL_CONNECTED_DISPLAYS, because more display devices can be
-    connected than are actively in use."""
+    """return the maximum number of display devices that can be driven simultaneously on a GPU.
+
+    Note that this does not indicate the maximum number of bits that can be set in
+    NV_CTRL_CONNECTED_DISPLAYS, because more display devices can be connected than are actively
+    in use."""
     return query_int_attribute(self, target, 0, NV_CTRL_MAX_DISPLAYS)
 
 
@@ -5159,7 +5159,7 @@ def type(self):
         return self._type
 
     def __str__(self):
-        return '<nVidia %s #%d>' % (self._name, self.id())
+        return '<nVidia {} #{}>'.format(self._name, self.id())
 
 
 class Gpu(Target):
 
@@ -40,11 +40,11 @@
     display = Display()
     # Check for extension
     if not display.has_extension('NV-CONTROL'):
-        sys.stderr.write('%s: server does not have the NV-CONTROL extension\n'
-                         % sys.argv[0])
-        print(display.query_extension('NV-CONTROL'))
+        sys.stderr.write('{}: server does not have the NV-CONTROL extension\n'.format(sys.argv[0]))
+        ext = display.query_extension('NV-CONTROL')
+        print(ext)
         sys.stderr.write("\n".join(display.list_extensions()))
-        if display.query_extension('NV-CONTROL') is None:
+        if ext is None:
             sys.exit(1)
 
     gpu = Gpu(0)
 
@@ -42,11 +42,11 @@ def __init__(self, display):
 
         # Check for extension
         if not self.d.has_extension('XINERAMA'):
-            sys.stderr.write('%s: server does not have the XINERAMA extension\n'
-                             % sys.argv[0])
-            print(self.d.query_extension('XINERAMA'))
+            sys.stderr.write('{}: server does not have the XINERAMA extension\n'.format(sys.argv[0]))
+            ext = self.d.query_extension('XINERAMA')
+            print(ext)
             sys.stderr.write("\n".join(self.d.list_extensions()))
-            if self.d.query_extension('XINERAMA') is None:
+            if ext is None:
                 sys.exit(1)
 
         # print version
 
@@ -42,11 +42,11 @@ def __init__(self, display):
 
         # Check for extension
         if not self.d.has_extension('RANDR'):
-            sys.stderr.write('%s: server does not have the RANDR extension\n'
-                             % sys.argv[0])
-            print(self.d.query_extension('RANDR'))
+            sys.stderr.write('{}: server does not have the RANDR extension\n'.format(sys.argv[0]))
+            ext = self.d.query_extension('RANDR')
+            print(ext)
             sys.stderr.write("\n".join(self.d.list_extensions()))
-            if self.d.query_extension('RANDR') is None:
+            if ext is None:
                 sys.exit(1)
 
         # print(version)