在使用Python IDLE时,我时常想有没有像命令提示符环境中的cls那样的清屏命令,一下子删除交互模式中所有已执行的命令,毕竟每次都关掉在重新打开IDLE有点麻烦,于是在网上搜了一下,学会了自定义IDLE清屏快捷键,觉得很不错,就来分享一下。
具体操作步骤如下:
1)下载ClearWindow.py文件;
这里附有该文件源码,下载后以 .py 格式保存即可
"""
Clear Window Extension
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=
"""
class ClearWindow:
menudefs = [
('options', [None,
('Clear Shell Window', '<>'),
]),]
def __init__(self, editwin):
self.editwin = editwin
self.text = self.editwin.text
self.text.bind("<>", self.clear_window2)
self.text.bind("<>", 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)将这个文件放在Python X\Lib\idlelib目录下(X为你的python版本);
3)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;
4)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=
5)保存config-extensions.def文件后重启IDLE,会发现菜单Options下面多了一个可以清屏的菜单项,如图所示。另外,也可以随时使用“Ctrl + l”快捷键实现清屏。
6)这个快捷键是可以任意修改的,修改的地方就在上面配置代码的最后一行“ clear-window=
怎么样,都学会了吧,那就快试试自定义自己喜欢的快捷键吧!!!