direct: Utilize the built-in `sorted` function

Closes #1479

direct/src/actor/Actor.py

@@ -280,9 +280,7 @@ class Actor(DirectObject, NodePath):
                         self.setLODNode(node = lodNode)
                         # preserve numerical order for lod's
                         # this will make it easier to set ranges
-                        sortedKeys = list(models.keys())
-                        sortedKeys.sort()
-                        for lodName in sortedKeys:
+                        for lodName in sorted(models):
                             # make a node under the LOD switch
                             # for each lod (just because!)
                             self.addLOD(str(lodName))
@@ -302,9 +300,7 @@ class Actor(DirectObject, NodePath):
                         # it is a single part actor w/LOD
                         self.setLODNode(node = lodNode)
                         # preserve order of LOD's
-                        sortedKeys = list(models.keys())
-                        sortedKeys.sort()
-                        for lodName in sortedKeys:
+                        for lodName in sorted(models):
                             self.addLOD(str(lodName))
                             # pass in dictionary of parts
                             self.loadModel(models[lodName], lodName=lodName,
@@ -323,9 +319,7 @@ class Actor(DirectObject, NodePath):
                         if isinstance(models, dict):
                             if isinstance(models[next(iter(models))], dict):
                                 # then we have a multi-part w/ LOD
-                                sortedKeys = list(models.keys())
-                                sortedKeys.sort()
-                                for lodName in sortedKeys:
+                                for lodName in sorted(models):
                                     # iterate over both dicts
                                     for partName in anims:
                                         self.loadAnims(
@@ -336,9 +330,7 @@ class Actor(DirectObject, NodePath):
                                     self.loadAnims(anims[partName], partName)
                     elif isinstance(models, dict):
                         # then we have single-part w/ LOD
-                        sortedKeys = list(models.keys())
-                        sortedKeys.sort()
-                        for lodName in sortedKeys:
+                        for lodName in sorted(models):
                             self.loadAnims(anims, lodName=lodName)
                     else:
                         # else it is single-part w/o LOD
@@ -603,9 +595,6 @@ class Actor(DirectObject, NodePath):
         return bundles
 
     def __updateSortedLODNames(self):
-        # Cache the sorted LOD names so we don't have to grab them
-        # and sort them every time somebody asks for the list
-        self.__sortedLODNames = list(self.__partBundleDict.keys())
         # Reverse sort the doing a string->int
         def sortKey(x):
             if not str(x).isdigit():
@@ -622,7 +611,9 @@ class Actor(DirectObject, NodePath):
             else:
                 return int(x)
 
-        self.__sortedLODNames.sort(key=sortKey, reverse=True)
+        # Cache the sorted LOD names so we don't have to grab them
+        # and sort them every time somebody asks for the list
+        self.__sortedLODNames = sorted(self.__partBundleDict, key=sortKey, reverse=True)
 
     def getLODNames(self):
         """

direct/src/cluster/ClusterClient.py

@@ -169,12 +169,9 @@ class ClusterClient(DirectObject.DirectObject):
             self.serverList[server].sendNamedMovementDone()
 
     def redoSortedPriorities(self):
-        self.sortedControlMappings = []
-        for key in self.controlMappings:
-            self.sortedControlMappings.append([self.controlPriorities[key],
-                                               key])
-
-        self.sortedControlMappings.sort()
+        self.sortedControlMappings = sorted(
+            [self.controlPriorities[key], key] for key in self.controlMappings
+        )
 
     def moveObject(self, nodePath, object, serverList, offset, hasColor = True):
         self.notify.debug('moving object '+object)

direct/src/cluster/ClusterServer.py

@@ -137,13 +137,9 @@ class ClusterServer(DirectObject.DirectObject):
             self.objectMappings.pop(name)
 
     def redoSortedPriorities(self):
-
-        self.sortedControlMappings = []
-        for key in self.objectMappings:
-            self.sortedControlMappings.append([self.controlPriorities[key],
-                                               key])
-
-        self.sortedControlMappings.sort()
+        self.sortedControlMappings = sorted(
+            [self.controlPriorities[key], key] for key in self.objectMappings
+        )
 
     def addControlMapping(self, objectName, controlledName, offset = None,
                           priority = 0):

direct/src/directtools/DirectLights.py

@@ -66,9 +66,7 @@ class DirectLights(NodePath):
 
     def getNameList(self):
         # Return a sorted list of all lights in the light dict
-        nameList = [x.getName() for x in self.lightDict.values()]
-        nameList.sort()
-        return nameList
+        return sorted(x.getName() for x in self.lightDict.values())
 
     def create(self, ltype):
         ltype = ltype.lower()

direct/src/dist/FreezeTool.py

@@ -1146,15 +1146,12 @@ class Freezer:
 
         # Walk through the list in sorted order, so we reach parents
         # before children.
-        names = list(self.modules.items())
-        names.sort()
-
         excludeDict = {}
         implicitParentDict = {}
         includes = []
         autoIncludes = []
         origToNewName = {}
-        for newName, mdef in names:
+        for newName, mdef in sorted(self.modules.items()):
             moduleName = mdef.moduleName
             origToNewName[moduleName] = newName
             if mdef.implicit and '.' in newName:

direct/src/dist/commands.py

@@ -859,16 +859,12 @@ class build_apps(setuptools.Command):
             libdir = os.path.dirname(dtool_fn.to_os_specific())
             etcdir = os.path.join(libdir, '..', 'etc')
 
-            etcfiles = os.listdir(etcdir)
-            etcfiles.sort(reverse=True)
-            for fn in etcfiles:
+            for fn in sorted(os.listdir(etcdir), reverse=True):
                 if fn.lower().endswith('.prc'):
                     with open(os.path.join(etcdir, fn)) as f:
                         prcstring += f.read()
         else:
-            etcfiles = [i for i in p3dwhl.namelist() if i.endswith('.prc')]
-            etcfiles.sort(reverse=True)
-            for fn in etcfiles:
+            for fn in sorted((i for i in p3dwhl.namelist() if i.endswith('.prc')), reverse=True):
                 with p3dwhl.open(fn) as f:
                     prcstring += f.read().decode('utf8')
 

direct/src/distributed/DoCollectionManager.py

@@ -149,10 +149,7 @@ class DoCollectionManager:
             class2count.setdefault(className, 0)
             class2count[className] += 1
         count2classes = invertDictLossless(class2count)
-        counts = list(count2classes.keys())
-        counts.sort()
-        counts.reverse()
-        for count in counts:
+        for count in sorted(count2classes, reverse=True):
             count2classes[count].sort()
             for name in count2classes[count]:
                 print('%s %s' % (count, name))
@@ -166,10 +163,7 @@ class DoCollectionManager:
             class2count.setdefault(className, 0)
             class2count[className] += 1
         count2classes = invertDictLossless(class2count)
-        counts = list(count2classes.keys())
-        counts.sort()
-        counts.reverse()
-        for count in counts:
+        for count in sorted(count2classes, reverse=True):
             count2classes[count].sort()
             for name in count2classes[count]:
                 # print '%s %s' % (count, name)

direct/src/distributed/DoInterestManager.py

@@ -512,8 +512,7 @@ class DoInterestManager(DirectObject.DirectObject):
         datagram = PyDatagram()
         # Add message type
         if isinstance(zoneIdList, list):
-            vzl = list(zoneIdList)
-            vzl.sort()
+            vzl = sorted(zoneIdList)
             uniqueElements(vzl)
             datagram.addUint16(CLIENT_ADD_INTEREST_MULTIPLE)
             datagram.addUint32(contextId)

direct/src/gui/DirectGuiBase.py

@@ -616,9 +616,7 @@ class DirectGuiBase(DirectObject.DirectObject):
 
     def components(self):
         # Return a list of all components.
-        names = list(self.__componentInfo.keys())
-        names.sort()
-        return names
+        return sorted(self.__componentInfo)
 
     def hascomponent(self, component):
         return component in self.__componentInfo

direct/src/leveleditor/HotKeyUI.py

@@ -116,9 +116,7 @@ class HotKeyPanel(ScrolledPanel):
 
     def updateUI(self):
         vbox = wx.BoxSizer(wx.VERTICAL)
-        keys = list(base.direct.hotKeyMap.keys())
-        keys.sort()
-        for key in keys:
+        for key in sorted(base.direct.hotKeyMap):
             keyDesc = base.direct.hotKeyMap[key]
             itemPanel = wx.Panel(self)
             sizer = wx.BoxSizer(wx.HORIZONTAL)

direct/src/showbase/BulletinBoard.py

@@ -55,8 +55,6 @@ class BulletinBoard:
     def __repr__(self):
         str  = 'Bulletin Board Contents\n'
         str += '======================='
-        keys = list(self._dict.keys())
-        keys.sort()
-        for postName in keys:
+        for postName in sorted(self._dict):
             str += '\n%s: %s' % (postName, self._dict[postName])
         return str

direct/src/showbase/ContainerReport.py

@@ -228,14 +228,11 @@ class ContainerReport(Job):
         if type not in self._type2id2len:
             return
         len2ids = invertDictLossless(self._type2id2len[type])
-        lengths = list(len2ids.keys())
-        lengths.sort()
-        lengths.reverse()
         print('=====')
         print('===== %s' % type)
         count = 0
         stop = False
-        for l in lengths:
+        for l in sorted(len2ids, reverse=True):
             #len2ids[l].sort()
             pathStrList = list()
             for id in len2ids[l]:
@@ -257,9 +254,8 @@ class ContainerReport(Job):
         for type in initialTypes:
             for i in self._outputType(type, **kArgs):
                 yield None
-        otherTypes = list(set(self._type2id2len.keys()).difference(set(initialTypes)))
-        otherTypes.sort(key=lambda obj: obj.__name__)
-        for type in otherTypes:
+        otherTypes = set(self._type2id2len).difference(initialTypes)
+        for type in sorted(otherTypes, key=lambda obj: obj.__name__):
             for i in self._outputType(type, **kArgs):
                 yield None
 

direct/src/showbase/ExceptionVarDump.py

@@ -116,15 +116,10 @@ def _excepthookDumpVars(eType, eValue, tb):
         for name, obj in frame.f_locals.items():
             if name in codeNames:
                 name2obj[name] = obj
-        # show them in alphabetical order
-        names = list(name2obj.keys())
-        names.sort()
-        # push them in reverse order so they'll be popped in the correct order
-        names.reverse()
 
         traversedIds = set()
-
-        for name in names:
+        # push them in reverse alphabetical order so they'll be popped in the correct order
+        for name in sorted(name2obj, reverse=True):
             stateStack.push([name, name2obj[name], traversedIds])
 
         while len(stateStack) > 0:
@@ -150,14 +145,10 @@ def _excepthookDumpVars(eType, eValue, tb):
                                 continue
                         attrName2obj[attrName] = attr
                 if len(attrName2obj) > 0:
-                    # show them in alphabetical order
-                    attrNames = list(attrName2obj.keys())
-                    attrNames.sort()
-                    # push them in reverse order so they'll be popped in the correct order
-                    attrNames.reverse()
                     ids = set(traversedIds)
                     ids.add(id(obj))
-                    for attrName in attrNames:
+                    # push them in reverse alphabetical order so they'll be popped in the correct order
+                    for attrName in sorted(attrName2obj, reverse=True):
                         obj = attrName2obj[attrName]
                         stateStack.push(['%s.%s' % (name, attrName), obj, ids])
 

direct/src/showbase/GarbageReport.py

@@ -294,8 +294,7 @@ class GarbageReport(Job):
             if self._args.fullReport:
                 garbageIndices = range(self.numGarbage)
             else:
-                garbageIndices = list(self.cycleIds)
-                garbageIndices.sort()
+                garbageIndices = sorted(self.cycleIds)
             numGarbage = len(garbageIndices)
 
             # log each individual item with a number in front of it

direct/src/showbase/JobManager.py

@@ -141,9 +141,7 @@ class JobManager:
 
     def _getSortedPriorities(self):
         # returns all job priorities in ascending order
-        priorities = list(self._pri2jobId2job.keys())
-        priorities.sort()
-        return priorities
+        return sorted(self._pri2jobId2job)
 
     def _process(self, task=None):
         if self._useOverflowTime is None:

direct/src/showbase/Messenger.py

@@ -540,9 +540,7 @@ class Messenger:
         return a matching event (needle) if found (in haystack).
         This is primarily a debugging tool.
         """
-        keys = list(self.__callbacks.keys())
-        keys.sort()
-        for event in keys:
+        for event in sorted(self.__callbacks):
             if repr(event).find(needle) >= 0:
                 return {event: self.__callbacks[event]}
 
@@ -553,9 +551,7 @@ class Messenger:
         This is primarily a debugging tool.
         """
         matches = {}
-        keys = list(self.__callbacks.keys())
-        keys.sort()
-        for event in keys:
+        for event in sorted(self.__callbacks):
             if repr(event).find(needle) >= 0:
                 matches[event] = self.__callbacks[event]
                 # if the limit is not None, decrement and
@@ -596,9 +592,7 @@ class Messenger:
         Compact version of event, acceptor pairs
         """
         str = "The messenger is currently handling:\n" + "="*64 + "\n"
-        keys = list(self.__callbacks.keys())
-        keys.sort()
-        for event in keys:
+        for event in sorted(self.__callbacks):
             str += self.__eventRepr(event)
         # Print out the object: event dictionary too
         str += "="*64 + "\n"
@@ -617,9 +611,7 @@ class Messenger:
         """
         str = 'Messenger\n'
         str = str + '='*50 + '\n'
-        keys = list(self.__callbacks.keys())
-        keys.sort()
-        for event in keys:
+        for event in sorted(self.__callbacks):
             acceptorDict = self.__callbacks[event]
             str = str + 'Event: ' + event + '\n'
             for key in list(acceptorDict.keys()):

direct/src/showbase/ObjectPool.py

@@ -90,10 +90,7 @@ class ObjectPool:
     def typeFreqStr(self):
         s  =   'Object Pool: Type Frequencies'
         s += '\n============================='
-        counts = list(set(self._count2types.keys()))
-        counts.sort()
-        counts.reverse()
-        for count in counts:
+        for count in sorted(self._count2types, reverse=True):
             types = makeList(self._count2types[count])
             for typ in types:
                 s += '\n%s\t%s' % (count, typ)
@@ -102,12 +99,10 @@ class ObjectPool:
     def printObjsByType(self):
         print('Object Pool: Objects By Type')
         print('\n============================')
-        counts = list(set(self._count2types.keys()))
-        counts.sort()
         # print types with the smallest number of instances first, in case
         # there's a large group that waits a long time before printing
         #counts.reverse()
-        for count in counts:
+        for count in sorted(self._count2types):
             types = makeList(self._count2types[count])
             for typ in types:
                 print('TYPE: %s, %s objects' % (repr(typ), len(self._type2objs[typ])))
@@ -115,10 +110,7 @@ class ObjectPool:
 
     def printReferrers(self, numEach=3):
         """referrers of the first few of each type of object"""
-        counts = list(set(self._count2types.keys()))
-        counts.sort()
-        counts.reverse()
-        for count in counts:
+        for count in sorted(self._count2types, reverse=True):
             types = makeList(self._count2types[count])
             for typ in types:
                 print('\n\nTYPE: %s' % repr(typ))

direct/src/showbase/OnScreenDebug.py

@@ -57,9 +57,7 @@ class OnScreenDebug:
         if not self.onScreenText:
             self.load()
         self.onScreenText.clearText()
-        entries = list(self.data.items())
-        entries.sort()
-        for k, v in entries:
+        for k, v in sorted(self.data.items()):
             if v[0] == self.frame:
                 # It was updated this frame (key equals value):
                 #isNew = " is"

direct/src/showutil/TexMemWatcher.py

@@ -756,8 +756,8 @@ class TexMemWatcher(DirectObject):
 
         # Sort the regions from largest to smallest to maximize
         # packing effectiveness.
-        texRecords = list(self.texRecordsByTex.values())
-        texRecords.sort(key = lambda tr: (tr.tw, tr.th), reverse = True)
+        texRecords = sorted(self.texRecordsByTex.values(),
+                            key=lambda tr: (tr.tw, tr.th), reverse=True)
 
         for tr in texRecords:
             self.placeTexture(tr)

direct/src/tkpanels/FSMInspector.py

@@ -358,8 +358,7 @@ class FSMInspector(AppShell):
 
     def printLayout(self):
         dict = self.stateInspectorDict
-        keys = list(dict.keys())
-        keys.sort()
+        keys = sorted(dict)
         print("ClassicFSM.ClassicFSM('%s', [" % self.name)
         for key in keys[:-1]:
             si = dict[key]

direct/src/tkpanels/Inspector.py

@@ -95,9 +95,7 @@ class Inspector:
 
     def initializePartsList(self):
         self._partsList = []
-        keys = self.namedParts()
-        keys.sort()
-        for each in keys:
+        for each in sorted(self.namedParts()):
             self._partsList.append(each)
             #if not callable(getattr(self.object, each)):
             #    self._partsList.append(each)
@@ -202,9 +200,7 @@ class DictionaryInspector(Inspector):
 
     def initializePartsList(self):
         Inspector.initializePartsList(self)
-        keys = list(self.object.keys())
-        keys.sort()
-        for each in keys:
+        for each in sorted(self.object):
             self._partsList.append(each)
 
     def partNumber(self, partNumber):

direct/src/tkpanels/ParticlePanel.py

@@ -1174,9 +1174,7 @@ class ParticlePanel(AppShell):
         self.particlesLabelMenu.add_separator()
         # Add in a checkbutton for each effect (to toggle on/off)
         particles = self.particleEffect.getParticlesList()
-        names = [x.getName() for x in particles]
-        names.sort()
-        for name in names:
+        for name in sorted(x.getName() for x in particles):
             particle = self.particleEffect.getParticlesNamed(name)
             self.particlesLabelMenu.add_command(
                 label = name,
@@ -1199,9 +1197,7 @@ class ParticlePanel(AppShell):
         self.forceGroupLabelMenu.add_separator()
         # Add in a checkbutton for each effect (to toggle on/off)
         forceGroupList = self.particleEffect.getForceGroupList()
-        names = [x.getName() for x in forceGroupList]
-        names.sort()
-        for name in names:
+        for name in sorted(x.getName() for x in forceGroupList):
             force = self.particleEffect.getForceGroupNamed(name)
             self.forceGroupLabelMenu.add_command(
                 label = name,

direct/src/tkpanels/TaskManagerPanel.py

@@ -151,10 +151,8 @@ class TaskManagerWidget(DirectObject):
         # Get a list of task names
         taskNames = []
         self.__taskDict = {}
-        tasks = self.taskMgr.getTasks()
-        tasks.sort(key = lambda t: t.getName())
         count = 0
-        for task in tasks:
+        for task in sorted(self.taskMgr.getTasks(), key=lambda t: t.getName()):
             taskNames.append(task.getName())
             self.__taskDict[count] = task
             count += 1

direct/src/tkwidgets/WidgetPropertiesDialog.py

@@ -21,8 +21,7 @@ class WidgetPropertiesDialog(tk.Toplevel):
         self.propertyDict = propertyDict
         self.propertyList = propertyList
         if self.propertyList is None:
-            self.propertyList = list(self.propertyDict.keys())
-            self.propertyList.sort()
+            self.propertyList = sorted(self.propertyDict)
         # Use default parent if none specified
         if not parent:
             parent = tk._default_root