IDLE的GUI交互模式下完美清屏

IDLE的GUI交互模式下完美清屏
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1.首先把复制新建保存ClearWindow.py文件，将这个文件放在<Python安装位置>\Lib\idlelib目录下
2.在这个目录下找到config-extensions.def这个文件（idle扩展的配置文件).尾部加如下信息
3、保存、关闭文件
4、重新启动IDLE，在option下面就有了Clear shell window 选项。快捷键是Ctrl + L

[ClearWindow]
enable=1
enable_editor=0
enable_shell=1
[ClearWindow_cfgBindings]
clear-window=<Control-Key-l>

ClearWindow.py的内容
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"""

Clear Window Extension
Version: 0.2

Author: Roger D. Serwy
roger.serwy@gmail.com

Date: 2009-06-14

It provides "Clear Shell Window" under "Options"
with ability to undo.

Add these lines to config-extensions.def

[ClearWindow]
enable=1
enable_editor=0
enable_shell=1
[ClearWindow_cfgBindings]
clear-window=<Control-Key-l>

"""

class ClearWindow:

menudefs = [
('options', [None,
('Clear Shell Window', '<<clear-window>>'),
]),]

def __init__(self, editwin):
self.editwin = editwin
self.text = self.editwin.text
self.text.bind("<<clear-window>>", self.clear_window2)

self.text.bind("<<undo>>", self.undo_event) # add="+" doesn't work

def undo_event(self, event):
text = self.text

text.mark_set("iomark2", "iomark")
text.mark_set("insert2", "insert")
self.editwin.undo.undo_event(event)

# fix iomark and insert
text.mark_set("iomark", "iomark2")
text.mark_set("insert", "insert2")
text.mark_unset("iomark2")
text.mark_unset("insert2")

def clear_window2(self, event): # Alternative method
# work around the ModifiedUndoDelegator
text = self.text
text.undo_block_start()
text.mark_set("iomark2", "iomark")
text.mark_set("iomark", 1.0)
text.delete(1.0, "iomark2 linestart")
text.mark_set("iomark", "iomark2")
text.mark_unset("iomark2")
text.undo_block_stop()
if self.text.compare('insert', '<', 'iomark'):
self.text.mark_set('insert', 'end-1c')
self.editwin.set_line_and_column()

def clear_window(self, event):
# remove undo delegator
undo = self.editwin.undo
self.editwin.per.removefilter(undo)

# clear the window, but preserve current command
self.text.delete(1.0, "iomark linestart")
if self.text.compare('insert', '<', 'iomark'):
self.text.mark_set('insert', 'end-1c')
self.editwin.set_line_and_column()

# restore undo delegator
self.editwin.per.insertfilter(undo)