diff --git a/Lib/distutils/command/config.py b/Lib/distutils/command/config.py
index 847e858..b1fd09e 100644
--- a/Lib/distutils/command/config.py
+++ b/Lib/distutils/command/config.py
@@ -9,7 +9,7 @@
 this header file lives".
 """
 
-import sys, os, re
+import os, re
 
 from distutils.core import Command
 from distutils.errors import DistutilsExecError
diff --git a/Lib/distutils/command/register.py b/Lib/distutils/command/register.py
index b49f86f..a3e0893 100644
--- a/Lib/distutils/command/register.py
+++ b/Lib/distutils/command/register.py
@@ -5,7 +5,7 @@
 
 # created 2002/10/21, Richard Jones
 
-import os, string, getpass
+import getpass
 import io
 import urllib.parse, urllib.request
 from warnings import warn
diff --git a/Lib/distutils/command/sdist.py b/Lib/distutils/command/sdist.py
index 7ea3d5f..35a06eb 100644
--- a/Lib/distutils/command/sdist.py
+++ b/Lib/distutils/command/sdist.py
@@ -3,7 +3,6 @@
 Implements the Distutils 'sdist' command (create a source distribution)."""
 
 import os
-import string
 import sys
 from types import *
 from glob import glob
diff --git a/Lib/distutils/extension.py b/Lib/distutils/extension.py
index 7efbb74..c507da3 100644
--- a/Lib/distutils/extension.py
+++ b/Lib/distutils/extension.py
@@ -4,7 +4,6 @@
 modules in setup scripts."""
 
 import os
-import sys
 import warnings
 
 # This class is really only used by the "build_ext" command, so it might
diff --git a/Lib/distutils/text_file.py b/Lib/distutils/text_file.py
index 478336f..93abad3 100644
--- a/Lib/distutils/text_file.py
+++ b/Lib/distutils/text_file.py
@@ -4,7 +4,7 @@
 that (optionally) takes care of stripping comments, ignoring blank
 lines, and joining lines with backslashes."""
 
-import sys, os, io
+import sys, io
 
 
 class TextFile:
diff --git a/Lib/ftplib.py b/Lib/ftplib.py
index 2afa19d..2ab1d56 100644
--- a/Lib/ftplib.py
+++ b/Lib/ftplib.py
@@ -36,10 +36,8 @@
 # Modified by Giampaolo Rodola' to add TLS support.
 #
 
-import os
 import sys
 import socket
-import warnings
 from socket import _GLOBAL_DEFAULT_TIMEOUT
 
 __all__ = ["FTP", "error_reply", "error_temp", "error_perm", "error_proto",
diff --git a/Lib/idlelib/help.py b/Lib/idlelib/help.py
index d0c59c5..4cb8c76 100644
--- a/Lib/idlelib/help.py
+++ b/Lib/idlelib/help.py
@@ -25,8 +25,8 @@
 show_idlehelp - Create HelpWindow.  Called in EditorWindow.help_dialog.
 """
 from html.parser import HTMLParser
-from os.path import abspath, dirname, isdir, isfile, join
-from tkinter import Tk, Toplevel, Frame, Text, Scrollbar, Menu, Menubutton
+from os.path import abspath, dirname, isfile, join
+from tkinter import Toplevel, Frame, Text, Scrollbar, Menu, Menubutton
 from tkinter import font as tkfont
 from idlelib.configHandler import idleConf
 
diff --git a/Lib/idlelib/macosxSupport.py b/Lib/idlelib/macosxSupport.py
index b96bae1..268426f 100644
--- a/Lib/idlelib/macosxSupport.py
+++ b/Lib/idlelib/macosxSupport.py
@@ -3,7 +3,6 @@
 """
 import sys
 import tkinter
-from os import path
 import warnings
 
 def runningAsOSXApp():
diff --git a/Lib/lib2to3/fixer_util.py b/Lib/lib2to3/fixer_util.py
index 44502bf..babe6cb 100644
--- a/Lib/lib2to3/fixer_util.py
+++ b/Lib/lib2to3/fixer_util.py
@@ -1,8 +1,6 @@
 """Utility functions, node construction macros, etc."""
 # Author: Collin Winter
 
-from itertools import islice
-
 # Local imports
 from .pgen2 import token
 from .pytree import Leaf, Node
diff --git a/Lib/lib2to3/fixes/fix_dict.py b/Lib/lib2to3/fixes/fix_dict.py
index 963f952..d3655c9 100644
--- a/Lib/lib2to3/fixes/fix_dict.py
+++ b/Lib/lib2to3/fixes/fix_dict.py
@@ -30,9 +30,8 @@
 # Local imports
 from .. import pytree
 from .. import patcomp
-from ..pgen2 import token
 from .. import fixer_base
-from ..fixer_util import Name, Call, LParen, RParen, ArgList, Dot
+from ..fixer_util import Name, Call, Dot
 from .. import fixer_util
 
 
diff --git a/Lib/lib2to3/fixes/fix_exec.py b/Lib/lib2to3/fixes/fix_exec.py
index 2c9b72d..ab921ee 100644
--- a/Lib/lib2to3/fixes/fix_exec.py
+++ b/Lib/lib2to3/fixes/fix_exec.py
@@ -10,7 +10,6 @@
 """
 
 # Local imports
-from .. import pytree
 from .. import fixer_base
 from ..fixer_util import Comma, Name, Call
 
diff --git a/Lib/lib2to3/fixes/fix_filter.py b/Lib/lib2to3/fixes/fix_filter.py
index 391889f..bb6718c 100644
--- a/Lib/lib2to3/fixes/fix_filter.py
+++ b/Lib/lib2to3/fixes/fix_filter.py
@@ -14,7 +14,6 @@
 """
 
 # Local imports
-from ..pgen2 import token
 from .. import fixer_base
 from ..fixer_util import Name, Call, ListComp, in_special_context
 
diff --git a/Lib/lib2to3/fixes/fix_has_key.py b/Lib/lib2to3/fixes/fix_has_key.py
index 18c560f..439708c 100644
--- a/Lib/lib2to3/fixes/fix_has_key.py
+++ b/Lib/lib2to3/fixes/fix_has_key.py
@@ -31,7 +31,6 @@
 
 # Local imports
 from .. import pytree
-from ..pgen2 import token
 from .. import fixer_base
 from ..fixer_util import Name, parenthesize
 
diff --git a/Lib/lib2to3/fixes/fix_metaclass.py b/Lib/lib2to3/fixes/fix_metaclass.py
index f3f8708..eca3334 100644
--- a/Lib/lib2to3/fixes/fix_metaclass.py
+++ b/Lib/lib2to3/fixes/fix_metaclass.py
@@ -20,7 +20,7 @@
 # Local imports
 from .. import fixer_base
 from ..pygram import token
-from ..fixer_util import Name, syms, Node, Leaf
+from ..fixer_util import syms, Node, Leaf
 
 
 def has_metaclass(parent):
diff --git a/Lib/lib2to3/fixes/fix_nonzero.py b/Lib/lib2to3/fixes/fix_nonzero.py
index ad91a29..c229596 100644
--- a/Lib/lib2to3/fixes/fix_nonzero.py
+++ b/Lib/lib2to3/fixes/fix_nonzero.py
@@ -3,7 +3,7 @@
 
 # Local imports
 from .. import fixer_base
-from ..fixer_util import Name, syms
+from ..fixer_util import Name
 
 class FixNonzero(fixer_base.BaseFix):
     BM_compatible = True
diff --git a/Lib/lib2to3/fixes/fix_print.py b/Lib/lib2to3/fixes/fix_print.py
index a1fe2f5..8780322 100644
--- a/Lib/lib2to3/fixes/fix_print.py
+++ b/Lib/lib2to3/fixes/fix_print.py
@@ -18,7 +18,7 @@
 from .. import pytree
 from ..pgen2 import token
 from .. import fixer_base
-from ..fixer_util import Name, Call, Comma, String, is_tuple
+from ..fixer_util import Name, Call, Comma, String
 
 
 parend_expr = patcomp.compile_pattern(
diff --git a/Lib/lib2to3/fixes/fix_types.py b/Lib/lib2to3/fixes/fix_types.py
index 00327a7..67bf51f 100644
--- a/Lib/lib2to3/fixes/fix_types.py
+++ b/Lib/lib2to3/fixes/fix_types.py
@@ -20,7 +20,6 @@
 """
 
 # Local imports
-from ..pgen2 import token
 from .. import fixer_base
 from ..fixer_util import Name
 
diff --git a/Lib/lib2to3/fixes/fix_urllib.py b/Lib/lib2to3/fixes/fix_urllib.py
index 1481cd9..5a36049 100644
--- a/Lib/lib2to3/fixes/fix_urllib.py
+++ b/Lib/lib2to3/fixes/fix_urllib.py
@@ -6,7 +6,6 @@
 
 # Local imports
 from lib2to3.fixes.fix_imports import alternates, FixImports
-from lib2to3 import fixer_base
 from lib2to3.fixer_util import (Name, Comma, FromImport, Newline,
                                 find_indentation, Node, syms)
 
diff --git a/Lib/lib2to3/refactor.py b/Lib/lib2to3/refactor.py
index 0728083..b60b9de 100644
--- a/Lib/lib2to3/refactor.py
+++ b/Lib/lib2to3/refactor.py
@@ -26,7 +26,6 @@
 from .pgen2 import driver, tokenize, token
 from .fixer_util import find_root
 from . import pytree, pygram
-from . import btm_utils as bu
 from . import btm_matcher as bm
 
 
diff --git a/Lib/pyclbr.py b/Lib/pyclbr.py
index 4d40b87..d7dba97 100644
--- a/Lib/pyclbr.py
+++ b/Lib/pyclbr.py
@@ -40,12 +40,10 @@
 """
 
 import io
-import os
 import sys
 import importlib.util
 import tokenize
 from token import NAME, DEDENT, OP
-from operator import itemgetter
 
 __all__ = ["readmodule", "readmodule_ex", "Class", "Function"]
 
@@ -328,6 +326,7 @@
 def _main():
     # Main program for testing.
     import os
+    from operator import itemgetter
     mod = sys.argv[1]
     if os.path.exists(mod):
         path = [os.path.dirname(mod)]
diff --git a/Lib/re.py b/Lib/re.py
index dde8901..661929e 100644
--- a/Lib/re.py
+++ b/Lib/re.py
@@ -119,7 +119,6 @@
 
 """
 
-import sys
 import sre_compile
 import sre_parse
 try:
diff --git a/Lib/turtledemo/__main__.py b/Lib/turtledemo/__main__.py
index 106d058..d9b3dd5 100644
--- a/Lib/turtledemo/__main__.py
+++ b/Lib/turtledemo/__main__.py
@@ -95,7 +95,6 @@
 from turtledemo import __doc__ as about_turtledemo
 
 import turtle
-import time
 
 demo_dir = os.path.dirname(os.path.abspath(__file__))
 darwin = sys.platform == 'darwin'
diff --git a/Lib/turtledemo/bytedesign.py b/Lib/turtledemo/bytedesign.py
index 64b1d7d..b3b095b 100755
--- a/Lib/turtledemo/bytedesign.py
+++ b/Lib/turtledemo/bytedesign.py
@@ -22,7 +22,6 @@
 mode as fast as possible.
 """
 
-import math
 from turtle import Turtle, mainloop
 from time import clock
 
diff --git a/Lib/turtledemo/planet_and_moon.py b/Lib/turtledemo/planet_and_moon.py
index 26abfdb..021ff99 100755
--- a/Lib/turtledemo/planet_and_moon.py
+++ b/Lib/turtledemo/planet_and_moon.py
@@ -18,7 +18,6 @@
 
 """
 from turtle import Shape, Turtle, mainloop, Vec2D as Vec
-from time import sleep
 
 G = 8
 
diff --git a/Lib/uuid.py b/Lib/uuid.py
index e96e7e0..200c800 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -487,7 +487,6 @@
     # Assume that the uuid_generate functions are broken from 10.5 onward,
     # the test can be adjusted when a later version is fixed.
     if sys.platform == 'darwin':
-        import os
         if int(os.uname().release.split('.')[0]) >= 9:
             _uuid_generate_time = None