bpo-29919: Remove unused imports found by pyflakes (#137)

Make also minor PEP8 coding style fixes on modified imports.

Lib/idlelib/config.py

@@ -29,7 +29,7 @@ from configparser import ConfigParser
 import os
 import sys
 
-from tkinter.font import Font, nametofont
+from tkinter.font import Font
 
 class InvalidConfigType(Exception): pass
 class InvalidConfigSet(Exception): pass

Lib/idlelib/editor.py

@@ -26,7 +26,6 @@ from idlelib import pyparse
 from idlelib import query
 from idlelib import replace
 from idlelib import search
-from idlelib import textview
 from idlelib import windows
 
 # The default tab setting for a Text widget, in average-width characters.

Lib/idlelib/idle_test/test_config.py

@@ -3,9 +3,7 @@
 Much is tested by opening config dialog live or in test_configdialog.
 Coverage: 27%
 '''
-from sys import modules
 from test.support import captured_stderr
-from tkinter import Tk
 import unittest
 from idlelib import config
 

Lib/idlelib/idle_test/test_config_key.py

@@ -6,7 +6,7 @@ from idlelib import config_key
 from test.support import requires
 requires('gui')
 import unittest
-from tkinter import Tk, Text
+from tkinter import Tk
 
 
 class GetKeysTest(unittest.TestCase):

Lib/idlelib/idle_test/test_editor.py

@@ -1,7 +1,5 @@
 import unittest
-from tkinter import Tk, Text
 from idlelib.editor import EditorWindow
-from test.support import requires
 
 class Editor_func_test(unittest.TestCase):
     def test_filename_to_unicode(self):

Lib/idlelib/idle_test/test_searchbase.py

@@ -5,7 +5,7 @@ testing skipping of suite when self.needwrapbutton is false.
 '''
 import unittest
 from test.support import requires
-from tkinter import Tk, Toplevel, Frame ##, BooleanVar, StringVar
+from tkinter import Tk, Frame  ##, BooleanVar, StringVar
 from idlelib import searchengine as se
 from idlelib import searchbase as sdb
 from idlelib.idle_test.mock_idle import Func

Lib/idlelib/pyshell.py

@@ -19,7 +19,6 @@ if TkVersion < 8.5:
 
 from code import InteractiveInterpreter
 import getopt
-import io
 import linecache
 import os
 import os.path

Lib/idlelib/query.py

@@ -24,7 +24,7 @@ import importlib
 import os
 from sys import executable, platform  # Platform is set for one test.
 
-from tkinter import Toplevel, StringVar, W, E, N, S
+from tkinter import Toplevel, StringVar, W, E, S
 from tkinter.ttk import Frame, Button, Entry, Label
 from tkinter import filedialog
 from tkinter.font import Font