1.在Python\Lib\idlelib下，新建一个ClearWindow.py文件（没有时就新建），内容如下：
""" 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.Python\Lib\idlelib下修改config-extensions.def ，在末尾添加如下内容：
[ClearWindow] enable=1 enable_editor=0 enable_shell=1 [ClearWindow_cfgBindings] clear-window=<Control-Key-l>
3.重启IDLE，在options选项中就可以看到增加了Clear shell Window Ctrl+L，即清屏的快捷键为：Ctrl+L