diff --git a/Lib/idlelib/idle_test/test_macosx.py b/Lib/idlelib/idle_test/test_macosx.py
index fae75d8a497..775697b278d 100644
--- a/Lib/idlelib/idle_test/test_macosx.py
+++ b/Lib/idlelib/idle_test/test_macosx.py
@@ -4,7 +4,6 @@ Coverage: 71% on Windows.
 '''
 from idlelib import macosx
 from test.support import requires
-import sys
 import tkinter as tk
 import unittest
 import unittest.mock as mock
diff --git a/Lib/idlelib/idle_test/test_tree.py b/Lib/idlelib/idle_test/test_tree.py
index 09ba9641af5..bb597d87ffd 100644
--- a/Lib/idlelib/idle_test/test_tree.py
+++ b/Lib/idlelib/idle_test/test_tree.py
@@ -5,7 +5,6 @@ Coverage: 56%
 from idlelib import tree
 from test.support import requires
 requires('gui')
-import os
 import unittest
 from tkinter import Tk
 
diff --git a/Lib/idlelib/macosx.py b/Lib/idlelib/macosx.py
index c225dd9e1a1..d4566cd815a 100644
--- a/Lib/idlelib/macosx.py
+++ b/Lib/idlelib/macosx.py
@@ -2,7 +2,6 @@
 A number of functions that enhance IDLE on Mac OSX.
 """
 from sys import platform  # Used in _init_tk_type, changed by test.
-import warnings
 
 import tkinter
 
diff --git a/Lib/idlelib/stackviewer.py b/Lib/idlelib/stackviewer.py
index 0698def5d4c..400fa632a09 100644
--- a/Lib/idlelib/stackviewer.py
+++ b/Lib/idlelib/stackviewer.py
@@ -1,6 +1,5 @@
 import linecache
 import os
-import re
 import sys
 
 import tkinter as tk