Python IDLE的清屏问题

新手在使用IDLE的过程中，肯定遇到麻烦的清屏问题，本次找到了简单高效的清屏解决方案：

首先在文本编译器里输入以下代码：

"""

Clear Window Extension
Version: 0.2

Author: Roger D. Serwy
        [email protected]

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)
 保存为ClearWindow.py文件，将这个文件放在Python X\Lib\idlelib目录下（X为你的python版本），然后在这个目录下找到config-extensions.def这个文件（idle扩展的配置文件），以记事本的方式打开它

打开config-extensions.def  后在句末加上这样几句：

[ClearWindow]

enable=1

enable_editor=0

enable_shell=1

[ClearWindow_cfgBindings]

clear-window=<Control-Key-l>

然后保存退出就可以了。

打开python的idle，看看options是不是多了一个选项clear shell window  ctrl+L

如果是这样的话，那就证明你安装成功了，以后要清屏直接ctrl+L就可以了，so ez ：）。

原文地址：https://www.cnblogs.com/lizhiqun1993/p/10100086.html