Python IDLE 清屏

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最近在学习Python,好很多简单的练习就直接在IDLE Shell里敲了,但发现一个问题,随着内容的增多,会弄得满屏都是,看起来很不舒服。于是就诞生了此文,此文多数内容摘自网络,并非原创,如有不道之处,请指出,谢谢!

编辑IDLE配置文件

该文件位于Python安装目录下的Lib\idlelib\目录里,名称为config-extensions.def,用文件编辑工具打开,并在文档最后插入如下内容:

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

设置配置目录

配置文件

添加ClearWindow.py文件

把该文件同样放在Python安装目录下的Lib\idlelib\目录里,然后重启IDLE就可以,是不是很简单。

ClearWindow.py文件的下载地址为:https://bugs.python.org/file14303/ClearWindow.py

也可以直接复制以下代码保存为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)
建议直接下载,如果复制的话,注意查看代码格式,比如缩进有没有乱掉,如果乱掉的话是会报错的

最终效果图如下,按下Ctrl + L键就可以清屏了

最终效果图

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