在Python IDLE中实现清屏

水深无声 2022-06-13 05:10 363阅读 0赞

![这里写图片描述][SouthEast]

####    屏幕东西太多，需要清屏，在windows的窗口清屏命令是cls，在Python IDLE中的快捷键是Ctrl+L    ####

###    不过这个快捷键默认是没有的，需要进行一些操作    ###

###    一、将下面的代码复制保存到新建的clearwindow.py中 ###

""" 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)

###    二、将这个文件放在Python X\\Lib\\idlelib目录下（X为你的python版本）    ###

###    三、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    ###

###    四、打开config-extensions.def 后在句末加上如下代码 ###

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

###    五、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  
  
这时ctrl+l就可以实现清屏了

[SouthEast]: /images/20220613/4469f7242005456c9f57b6310c451873.png