1、新建文件 ClearWindow.py
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_window)
def clear_window2(self, event): # Alternative method
# work around the ModifiedUndoDelegator
text = self.text
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")
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、将 ClearWindow.py 文件复制到 %\Lib\idlelib 目录下
一般绝对路径为：C:\Users\你的用户名\AppData\Local\Programs\Python\Python36\Lib\idlelib
3、修改同路径下的 config-extensions.def 文件
在文件末尾添加如下内容：
[ClearWindow]
enable=1
enable_editor=0
enable_shell=1
[ClearWindow_cfgBindings]
clear-window=<Control-Key-l>
其中，clear-window=<Control-Key-l> 表示快捷键设置为 Ctrl+L，可修改快捷键
4、重启 idle 即可在Options中发现新增的清屏选项
