1. 配置LineNumbers.py文件
创建名为&＃xff1a;LineNumbers.py 文件&＃xff0c;粘贴下面的代码到文件中
# IDLEX EXTENSION
## """
## Copyright(C) 2011 The Board of Trustees of the University of Illinois.
## All rights reserved.
##
## Developed by: Roger D. Serwy
## University of Illinois
##
## Permission is hereby granted, free of charge, to any person obtaining
## a copy of this software and associated documentation files (the
## "Software"), to deal with the Software without restriction, including
## without limitation the rights to use, copy, modify, merge, publish,
## distribute, sublicense, and/or sell copies of the Software, and to
## permit persons to whom the Software is furnished to do so, subject to
## the following conditions:
##
## &＃43; Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimers.
## &＃43; Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimers in the
## documentation and/or other materials provided with the distribution.
## &＃43; Neither the names of Roger D. Serwy, the University of Illinois, nor
## the names of its contributors may be used to endorse or promote
## products derived from this Software without specific prior written
## permission.
##
## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
## MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
## IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
## ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
## CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH
## THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
##
##
##
## LineNumbers Extension
##
## Provides line numbers to the left of the source code.
##
## The width of the line numbers adapts. Limit of 99,999 lines (for proper display).
##
## """
config_extension_def &＃61; """
[LineNumbers]
enable&＃61;1
enable_shell&＃61;0
visible&＃61;True
[LineNumbers_cfgBindings]
linenumbers-show&＃61;
"""
import sys
if sys.version <&＃39;3&＃39;:
from Tkinter import END, Text, LEFT, Y, NONE, RIGHT, NORMAL, DISABLED, Label, TOP, Frame, X
else:
from tkinter import END, Text, LEFT, Y, NONE, RIGHT, NORMAL, DISABLED, Label, TOP, Frame, X
from idlelib.configHandler import idleConf
from idlelib.Delegator import Delegator
from idlelib.Percolator import Percolator
FONTUPDATEINTERVAL &＃61; 1000 # milliseconds
_AFTER_UNDO &＃61; True # Flag to have the LineNumberDelegator inserted after the undo delegator
jn &＃61; lambda x,y: &＃39;%i.%i&＃39; % (x,y) # join integers to text coordinates
sp &＃61; lambda x: map(int, x.split(&＃39;.&＃39;)) # convert tkinter Text coordinate to a line and column tuple
def dbprint(func): # A decorator for debugging
def f(*args, **kwargs):
print(func, args, kwargs)
return func(*args, **kwargs)
return f
class LineNumbers(object):
menudefs &＃61; [(&＃39;options&＃39;, [(&＃39;!Show Line Numbers&＃39;, &＃39;<>&＃39;)])]
def __init__(self, editwin):
self.editwin &＃61; editwin
self.text &＃61; self.editwin.text
self.textfont &＃61; None
self.width &＃61; 2
self.after_id &＃61; None
self.create_linenumbers()
e &＃61; idleConf.GetOption("extensions", "LineNumbers",
"visible", type&＃61;"bool", default&＃61;True)
self.set_visible(e)
self.code_context_fix()
def close(self):
if self.after_id:
self.text.after_cancel(self.after_id)
self.visible &＃61; False
def adjust_font(self):
try:
# taken from CodeContext.py
newtextfont &＃61; self.editwin.text["font"]
if self.textln and newtextfont !&＃61; self.textfont:
self.textfont &＃61; newtextfont
self.textln["font"] &＃61; self.textfont
if self._cc_text:
self._cc_text["font"] &＃61; self.textfont
self.update_numbers()
except Exception as err:
import traceback; traceback.print_exc()
def font_timer(self):
if not self.visible:
return
self.adjust_font()
if self.after_id:
self.text.after_cancel(self.after_id)
self.after_id &＃61; self.text.after(FONTUPDATEINTERVAL, self.font_timer)
if not _AFTER_UNDO:
self.update_numbers() # fixes a bug due to this percolator being ahead of undo percolator.
def set_visible(self, b&＃61;True):
self.visible &＃61; b
if self.visible:
self.text.after(1, self.font_timer) # avoid a start-up bug
self.show()
# use .after to avoid a start-up error caused by update_idletasks in update_numbers
self.text.after(1, self.update_numbers)
else:
self.hide()
idleConf.SetOption("extensions", "LineNumbers",
"visible", &＃39;%s&＃39; % self.visible)
self.editwin.setvar("<>", self.visible)
def linenumbers_show_event(self, ev&＃61;None):
self.set_visible(not self.visible)
self._code_context_toggle()
def create_linenumbers(self):
""" Create the widget for displaying line numbers. """
editwin &＃61; self.editwin
text &＃61; self.text
text_frame &＃61; editwin.text_frame
self.textln &＃61; textln &＃61; Text(text_frame, width&＃61;self.width,
height&＃61;1, wrap&＃61;NONE)
# adjust font
textln.config(font&＃61;(idleConf.GetOption(&＃39;main&＃39;, &＃39;EditorWindow&＃39;, &＃39;font&＃39;),
idleConf.GetOption(&＃39;main&＃39;, &＃39;EditorWindow&＃39;, &＃39;font-size&＃39;)))
textln.bind("", self.focus_in_event)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind(&＃39;&＃39;, self.button_ignore)
textln.bind("", self.button4)
textln.bind("", self.button5)
textln.tag_config(&＃39;LINE&＃39;, justify&＃61;RIGHT)
textln.insert(END, &＃39;1&＃39;)
textln.tag_add(&＃39;LINE&＃39;, &＃39;1.0&＃39;, END)
# start the line numbers
self.per &＃61; per &＃61; Percolator(textln)
self.line_delegator &＃61; LineDelegator()
per.insertfilter(self.line_delegator)
textln._insert &＃61; self.line_delegator.delegate.insert
textln._delete &＃61; self.line_delegator.delegate.delete
lines &＃61; LineNumberDelegator(self)
if _AFTER_UNDO:
# Percolator.py&＃39;s .insertfilter should have an "after&＃61;" argument
lines.setdelegate(editwin.undo.delegate)
editwin.undo.setdelegate(lines)
else:
editwin.per.insertfilter(lines)
editwin.vbar[&＃39;command&＃39;] &＃61; self.vbar_split
editwin.text[&＃39;yscrollcommand&＃39;] &＃61; self.yscroll_split
def button4(self, ev&＃61;None):
self.text.event_generate("")
return "break"
def button5(self, ev&＃61;None):
self.text.event_generate("")
return "break"
def button_ignore(self, ev&＃61;None):
return "break"
def show(self):
self.textln.pack(side&＃61;LEFT, fill&＃61;Y, before&＃61;self.editwin.text)
def hide(self):
self.textln.pack_forget()
def focus_in_event(self, event&＃61;None):
self.editwin.text.focus_set()
self.textln.tag_remove(&＃39;sel&＃39;, &＃39;1.0&＃39;, &＃39;end&＃39;)
#self.editwin.text.event_generate("<>")
def generate_goto_event(self, event&＃61;None):
self.editwin.text.event_generate("<>")
return "break"
def vbar_split(self, *args, **kwargs):
""" split scrollbar commands to the editor text widget and the line number widget """
self.textln.yview(*args, **kwargs)
self.text.yview(*args, **kwargs)
def yscroll_split(self, *args, **kwargs):
""" send yview commands to both the scroll bar and line number listing """
#import traceback; traceback.print_stack()
self.editwin.vbar.set(*args)
self.textln.yview_moveto(args[0])
def update_numbers(self, add&＃61;None, remove&＃61;None):
if not self.visible: return
textln &＃61; self.textln
text &＃61; self.editwin.text
endline1, col1 &＃61; sp(text.index(END))
endline2, col2 &＃61; sp(textln.index(END))
if endline1 # delete numbers textln._delete(&＃39;%i.0&＃39; % endline1, END) elif endline1 > endline2: # add numbers q &＃61; range(endline2, endline1) r &＃61; map(lambda x: &＃39;%i&＃39; % x, q) s &＃61; &＃39;\n&＃39; &＃43; &＃39;\n&＃39;.join(r) textln._insert(END, s) textln.tag_add(&＃39;LINE&＃39;, &＃39;1.0&＃39;, END) # adjust width of textln, if needed. (counts from 1, not zero) if endline1 <&＃61; 100: width &＃61; 2 elif endline1 <&＃61; 1000: width &＃61; 3 elif endline1 <&＃61; 10000: width &＃61; 4 else: width &＃61; 5 # more than 9999 lines in IDLE? Really? # XXX: If your code requires width>5, i.e > 100,000 lines of code, # you probably should not be using IDLE. if width > self.width: # 2011-12-18 - only grow, not shrink self.width &＃61; width textln.configure(width&＃61;width) if self._cc_text: # adjust CC width self._cc_text.configure(width&＃61;width) self.textln.update_idletasks() a &＃61; self.text.yview() self.textln.yview_moveto(a[0]) def code_context_fix(self): self._cc_text &＃61; None self._cc_frame &＃61; None def f(): self.text.bind(&＃39;<>&＃39;, self._code_context_toggle, &＃39;&＃43;&＃39;) self._code_context_toggle() self.text.after(10, f) def _code_context_toggle(self, event&＃61;None): cc &＃61; self.editwin.extensions.get(&＃39;CodeContext&＃39;, None) if cc is None: return if not self.visible: if self._cc_frame: L &＃61; cc.label L.pack_forget() self._cc_frame.destroy() L.pack(side&＃61;TOP, fill&＃61;X, expand&＃61;False, before&＃61;self.editwin.text_frame) return editwin &＃61; self.editwin text &＃61; self.text text_frame &＃61; editwin.text_frame # repack the Label in a frame if cc.label: cc.label.pack_forget() F &＃61; Frame(self.editwin.top) F.lower() # fix Z-order t &＃61; Text(F, width&＃61;self.width, height&＃61;1, takefocus&＃61;0) t.bind("", lambda x: self.text.focus()) t["font"] &＃61; self.textln.cget(&＃39;font&＃39;) t.pack(side&＃61;LEFT, fill&＃61;Y) cc.label.pack(in_&＃61;F, fill&＃61;X, expand&＃61;False) F.pack(side&＃61;TOP, before&＃61;text_frame, fill&＃61;X, expand&＃61;False) self._cc_frame &＃61; F self._cc_text &＃61; t else: if self._cc_frame: self._cc_frame.destroy() self._cc_frame &＃61; None self._cc_text &＃61; None class LineNumberDelegator(Delegator): # for editwin.text def __init__(self, line_number_instance): Delegator.__init__(self) self.ext &＃61; line_number_instance def insert(self, index, chars, tags&＃61;None): self.delegate.insert(index, chars, tags) if &＃39;\n&＃39; in chars: self.ext.update_numbers()#add&＃61;chars.count(&＃39;\n&＃39;)) def delete(self, index1, index2&＃61;None): t &＃61; self.get(index1, index2) self.delegate.delete(index1, index2) if &＃39;\n&＃39; in t: self.ext.update_numbers()#remove&＃61;t.count(&＃39;\n&＃39;)) class LineDelegator(Delegator): # for textln def insert(self, *args, **kargs): pass def delete(self, *args, **kargs): pass 复制 LineNumbers.py文件到Python安装目录下的Lib\idlelib文件夹。 2. 启动扩展 配置idlelib目录下的config-extensions.def文件 往config-extensions.def文件配置如下数据&＃xff1a; [LineNumbers] enable&＃61;True #开启扩展 enable_editor&＃61;True #开启idle编辑器支持 enable_shell&＃61;True #开启idle shell支持 visible&＃61;True #扩展可见 保存之后重启IDLE&＃xff0c;可以看到我们的Shell和editor都有了行号。
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