Python IDLE清屏,,在学习和使用Pyth


在学习和使用Python的过程中,少不了要与Python IDLE打交道。但使用 Python IDLE 都会遇到一个常见而又懊恼的问题——要怎么清屏?答案是为IDLE增加一个清屏的扩展ClearWindow就可以了(在Issue 6143: IDLE中可以看到这个扩展的说明)。下面我说说安装使用的方法。1、下载ClearWindow.py(最下面有代码,保存为ClearWindow.py)。2、拷贝ClearWindow.py文件,放在Python安装目录Python XXX\Lib\idlelib下面(XXX为你的python版本)。3、记事本打开Python XXX\Lib\idlelib目录下的config-extensions.def(IDLE扩展的配置文件), 为防止出错,你可以在打开它之前先copy一个备份 。4、修改config-extensions.def ,在末尾添加如下内容,然后保存退出:[ClearWindow]enable=1enable_editor=0enable_shell=1[ClearWindow_cfgBindings]clear-window=<Control-Key-;>5、打开Python的IDLE,options选项中就可以看到增加了Clear Shell Window ctrl+;。6、在IDLE输入代码,然后按Ctrl+;(是指Ctrl和;),发现刚输入代码可以被清除了。
 1 """ 2  3 Clear Window Extension 4 Version: 0.2 5  6 Author: Roger D. Serwy 7         roger.serwy@gmail.com 8  9 Date: 2009-06-1410 11 It provides "Clear Shell Window" under "Options"12 with ability to undo.13 14 Add these lines to config-extensions.def15 16 [ClearWindow]17 enable=118 enable_editor=019 enable_shell=120 [ClearWindow_cfgBindings]21 clear-window=<Control-Key-l>22 23 24 """25 26 class ClearWindow:27 28     menudefs = [29         (‘options‘, [None,30                (‘Clear Shell Window‘, ‘<<clear-window>>‘),31        ]),]32 33     def __init__(self, editwin):34         self.editwin = editwin35         self.text = self.editwin.text36         self.text.bind("<<clear-window>>", self.clear_window2)37 38         self.text.bind("<<undo>>", self.undo_event)  # add="+" doesn‘t work39 40     def undo_event(self, event):41         text = self.text42         43         text.mark_set("iomark2", "iomark")44         text.mark_set("insert2", "insert")45         self.editwin.undo.undo_event(event)46 47         # fix iomark and insert48         text.mark_set("iomark", "iomark2")49         text.mark_set("insert", "insert2")50         text.mark_unset("iomark2")51         text.mark_unset("insert2")52         53 54     def clear_window2(self, event): # Alternative method55         # work around the ModifiedUndoDelegator56         text = self.text57         text.undo_block_start()58         text.mark_set("iomark2", "iomark")59         text.mark_set("iomark", 1.0)60         text.delete(1.0, "iomark2 linestart")61         text.mark_set("iomark", "iomark2")62         text.mark_unset("iomark2")63         text.undo_block_stop()64         if self.text.compare(‘insert‘, ‘<‘, ‘iomark‘):65             self.text.mark_set(‘insert‘, ‘end-1c‘)66         self.editwin.set_line_and_column()67 68     def clear_window(self, event):69         # remove undo delegator70         undo = self.editwin.undo71         self.editwin.per.removefilter(undo)72 73         # clear the window, but preserve current command74         self.text.delete(1.0, "iomark linestart")75         if self.text.compare(‘insert‘, ‘<‘, ‘iomark‘):76             self.text.mark_set(‘insert‘, ‘end-1c‘)77         self.editwin.set_line_and_column()78 79         # restore undo delegator80         self.editwin.per.insertfilter(undo)
ClearWindow.py作者:知乎用户链接:https://www.zhihu.com/question/20917976/answer/32876441来源:知乎著作权归作者所有。商业转载请联系作者获得授权,非商业转载请注明出处。

Python IDLE清屏

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