作者:金gordon
https://www.zhihu.com/question/20917976/answer/32876441
来源:知乎
著作权归作者所有,转载请联系作者获得授权。
安装使用的方法。
1、下载ClearWindow.py
"""
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)
2、拷贝ClearWindow.py文件,放在Python安装目录Python XXX\Lib\idlelib下面(XXX为你的python版本)。
3、记事本打开Python XXX\Lib\idlelib目录下的config-extensions.def(IDLE扩展的配置文件), 为防止出错,你可以在打开它之前先copy一个备份 。
4、修改config-extensions.def ,在末尾添加如下内容,然后保存退出:
[ClearWindow]
enable=1
enable_editor=0
enable_shell=1
[ClearWindow_cfgBindings]
clear-window=<Control-Key-;>
5、打开Python的IDLE,options选项中就可以看到增加了Clear shell window ctrl+;。
6、在IDLE输入代码,然后按Ctrl+;(是指Ctrl和;),发现刚输入代码可以被清除了。
说明:
快捷键Ctrl+;,可修改成其他键,将clear-window=<Control-Key-;>
里的Control和;修改成其他键即可。
经试验,Control换成Alter时,会启动不了IDLE,换成Shift时,快捷键不起作用,因为Shift+l,直接变成输入L了。