diff --git a/volatility/framework/plugins/linux/bash.py b/volatility/framework/plugins/linux/bash.py
index f837e6404..7c3a78742 100644
--- a/volatility/framework/plugins/linux/bash.py
+++ b/volatility/framework/plugins/linux/bash.py
@@ -79,20 +79,21 @@ class Bash(plugins.PluginInterface, timeliner.TimeLinerInterface):
                 yield (0, (task.pid, task_name, hist.get_time_object(), hist.get_command()))
 
     def run(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
         return renderers.TreeGrid(
             [("PID", int), ("Process", str), ("CommandTime", datetime.datetime), ("Command", str)],
-            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filt)))
+            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filter_func)))
 
     def generate_timeline(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
-        for row in self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filt)):
+        for row in self._generator(
+                plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filter_func)):
             _depth, row_data = row
             description = "{} ({}): \"{}\"".format(row_data[0], row_data[1], row_data[3])
             yield (description, timeliner.TimeLinerType.CREATED, row_data[2])
diff --git a/volatility/framework/plugins/linux/elfs.py b/volatility/framework/plugins/linux/elfs.py
index 0fefeff10..d3ad5bb55 100644
--- a/volatility/framework/plugins/linux/elfs.py
+++ b/volatility/framework/plugins/linux/elfs.py
@@ -43,11 +43,11 @@ class Elfs(plugins.PluginInterface):
                 yield (0, (task.pid, name, format_hints.Hex(vma.vm_start), format_hints.Hex(vma.vm_end), path))
 
     def run(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
         return renderers.TreeGrid(
             [("PID", int), ("Process", str), ("Start", format_hints.Hex), ("End", format_hints.Hex),
              ("File Path", str)],
-            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filt)))
+            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filter_func)))
diff --git a/volatility/framework/plugins/linux/malfind.py b/volatility/framework/plugins/linux/malfind.py
index 0d4be3d7f..403bef9ba 100644
--- a/volatility/framework/plugins/linux/malfind.py
+++ b/volatility/framework/plugins/linux/malfind.py
@@ -59,11 +59,11 @@ class Malfind(interfaces_plugins.PluginInterface):
                            vma.get_protection(), format_hints.HexBytes(data), disasm))
 
     def run(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
         return renderers.TreeGrid(
             [("PID", int), ("Process", str), ("Start", format_hints.Hex), ("End", format_hints.Hex),
              ("Protection", str), ("Hexdump", format_hints.HexBytes), ("Disasm", interfaces_renderers.Disassembly)],
-            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filt)))
+            self._generator(plugin(self.context, self.config['primary'], self.config['vmlinux'], filter = filter_func)))
diff --git a/volatility/framework/plugins/mac/bash.py b/volatility/framework/plugins/mac/bash.py
index 1979db141..e628a7e3d 100644
--- a/volatility/framework/plugins/mac/bash.py
+++ b/volatility/framework/plugins/mac/bash.py
@@ -90,11 +90,12 @@ class Bash(plugins.PluginInterface, timeliner.TimeLinerInterface):
             self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filter)))
 
     def generate_timeline(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
-        for row in self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filt)):
+        for row in self._generator(
+                plugin(self.context, self.config['primary'], self.config['darwin'], filter = filter_func)):
             _depth, row_data = row
             description = "{} ({}): \"{}\"".format(row_data[0], row_data[1], row_data[3])
             yield (description, timeliner.TimeLinerType.CREATED, row_data[2])
diff --git a/volatility/framework/plugins/mac/malfind.py b/volatility/framework/plugins/mac/malfind.py
index 11f9fe35d..49796be20 100644
--- a/volatility/framework/plugins/mac/malfind.py
+++ b/volatility/framework/plugins/mac/malfind.py
@@ -57,11 +57,11 @@ class Malfind(interfaces_plugins.PluginInterface):
                            vma.get_perms(), format_hints.HexBytes(data), disasm))
 
     def run(self):
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
         return renderers.TreeGrid(
             [("PID", int), ("Process", str), ("Start", format_hints.Hex), ("End", format_hints.Hex),
              ("Protection", str), ("Hexdump", format_hints.HexBytes), ("Disasm", interfaces_renderers.Disassembly)],
-            self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filt)))
+            self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filter_func)))
diff --git a/volatility/framework/plugins/mac/psaux.py b/volatility/framework/plugins/mac/psaux.py
index bcc09d8a0..be5428fff 100644
--- a/volatility/framework/plugins/mac/psaux.py
+++ b/volatility/framework/plugins/mac/psaux.py
@@ -81,10 +81,10 @@ class Psaux(plugins.PluginInterface):
             yield (0, (task.p_pid, task_name, task.p_argc, args_str))
 
     def run(self) -> renderers.TreeGrid:
-        filt = pslist.PsList.create_filter([self.config.get('pid', None)])
+        filter_func = pslist.PsList.create_filter([self.config.get('pid', None)])
 
         plugin = pslist.PsList.list_tasks
 
         return renderers.TreeGrid(
             [("PID", int), ("Process", str), ("Argc", int), ("Arguments", str)],
-            self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filt)))
+            self._generator(plugin(self.context, self.config['primary'], self.config['darwin'], filter = filter_func)))
diff --git a/volatility/framework/plugins/mac/pslist.py b/volatility/framework/plugins/mac/pslist.py
index cf70e447e..7e562ede3 100644
--- a/volatility/framework/plugins/mac/pslist.py
+++ b/volatility/framework/plugins/mac/pslist.py
@@ -27,7 +27,7 @@ class PsList(interfaces_plugins.PluginInterface):
         def nullfilter():
             return False
 
-        filt = nullfilter
+        filter_func = nullfilter
         # FIXME: mypy #4973 or #2608
         pid_list = pid_list or []
         filter_list = [x for x in pid_list if x is not None]
@@ -36,8 +36,8 @@ class PsList(interfaces_plugins.PluginInterface):
             def list_filter(x):
                 return x not in filter_list
 
-            filt = list_filter
-        return filt
+            filter_func = list_filter
+        return filter_func
 
     def _generator(self):
         for task in self.list_tasks(
diff --git a/volatility/framework/plugins/mac/pstree.py b/volatility/framework/plugins/mac/pstree.py
index a3fea6560..d7fcdcb06 100644
--- a/volatility/framework/plugins/mac/pstree.py
+++ b/volatility/framework/plugins/mac/pstree.py
@@ -22,7 +22,7 @@ class PsTree(plugins.PluginInterface):
             requirements.SymbolRequirement(name = "darwin", description = "Mac Kernel")
         ]
 
-    def find_level(self, pid):
+    def _find_level(self, pid):
         """Finds how deep the pid is in the processes list"""
         seen = set([])
         seen.add(pid)
@@ -44,7 +44,7 @@ class PsTree(plugins.PluginInterface):
 
         # Build the child/level maps
         for pid in self._processes:
-            self.find_level(pid)
+            self._find_level(pid)
 
         def yield_processes(pid):
             proc = self._processes[pid]