已实现基本功能，显示行号功能暂时实现不了（后面学会了再加，右下角可以实现定位光标所在行.列） 可能会有些bug

  1 from tkinter import *

 from tkinter.messagebox import *

 from tkinter.filedialog import *

 from threading import Timer

 import string

 #定义一个添加菜单的类，想加什么菜单直接调用即可,副作用是没法加分隔线

 class menuNameAccCom:

     def __init__(self,menuname,menucom,menuacc):

         self.menuname=menuname

         self.menuacc=menuacc

         self.menucom=menucom

     def addmenu(self,wigetName):

         for (name,com,acc) in (zip(self.menuname,self.menucom,self.menuacc)):

             wigetName.add_command(label=name,accelerator=acc,command=com)

 filename=''

 def openfile():

     global filename

     filename = askopenfilename(defaultextension='.txt')

     if filename == '':

         filename = None

     else:

         root.title('FileName:'+os.path.basename(filename))

         textPad.delete(1.0,END)#delete all

         f = open(filename,'r')

         textPad.insert(1.0,f.read())

         f.close()

 def newfile():

     global FileName

     root.title('new file')

     filename = None

     textPad.delete(1.0,END)

 def savefile():

     global filename

     try:

         f = open(filename,'w')

         msg = textPad.get(1.0,END)

         f.write(msg)

         f.close()

     except:

         saveas()

 def saveas():

     global filename

     f = asksaveasfilename(initialfile = 'newfile',defaultextension ='.txt')

     filename = f

     fh = open(f,'w')

     msg = textPad.get(1.0,END)

     fh.write(msg)

     fh.close()

     root.title('FileName:'+os.path.basename(f))

 def cut():

     textPad.event_generate('<<Cut>>')

 def copy():

     textPad.event_generate('<<Copy>>')

 def paste():

     textPad.event_generate('<<Paste>>')

 def redo():

     textPad.event_generate('<<Redo>>')

 def undo():

     textPad.event_generate('<<Undo>>')

 def selectall():

     textPad.tag_add('sel',1.0,END)

 def search():

     topsearch=Toplevel(root)

     topsearch.geometry('300x30+200+250')

     labell=Label(topsearch,text='find')

     labell.grid(row=0,column=0,padx=5)

     entry1=Entry(topsearch,width=28)

     entry1.grid(row=0,column=1,padx=5)

     button1=Button(topsearch,text='find')

     button1.grid(row=0,column=2)

 def addButton(name,command):

     for (toolname ,toolcom) in zip(name,command):

         shortButton = Button(toolbar,text=toolname,relief='groove',command=toolcom)

         shortButton.pack(side=LEFT,padx=2,pady=5)

 root = Tk()

 root.title('Andy Note')

 root.geometry('800x500+100+100')

 menubar = Menu(root)

 root.config(menu= menubar)

 #文件菜单

 filemenu = Menu(menubar,tearoff=False)

 filemenuName = ('New','Open','Save','Save as')

 filemenuAcc = ('Ctrl+N','Ctrl+O','Ctrl+S','Ctrl+Shift+S')

 filemenuCom = (newfile,openfile,savefile,saveas)

 filem = menuNameAccCom(filemenuName,filemenuCom,filemenuAcc)#调用添加菜单的类

 filem.addmenu(filemenu)

 menubar.add_cascade(label='File',menu=filemenu)

 #编辑菜单

 editmenu = Menu(menubar,tearoff=False)

 editmenuName = ('Undo','Redo','Cut','Copy','Paste','Select All')

 editmenuAcc = ('Ctrl+Z','Ctrl+Y','Ctrl+X','Ctrl+C','Ctrl+V','Ctrl+A')

 editmenuCom = (undo,redo,cut,copy,paste,selectall)

 editm = menuNameAccCom(editmenuName,editmenuCom,editmenuAcc)#调用添加菜单的类

 editm.addmenu(editmenu)

 menubar.add_cascade(label='Edit',menu=editmenu)

 findmenu = Menu(menubar,tearoff=False)

 findmenu.add_command(label='Find',accelerator='Ctrl+F',command=search)

 menubar.add_cascade(label='Find',menu=findmenu)

 #按钮

 toolbar = Frame(root,height=20)

 toolbarName = ('New','Open','Save','SaveAs','Undo','Redo','Cut','Copy','Paste','SelectAll')

 toolbarCommand = (newfile,openfile,savefile,saveas,undo,redo,cut,copy,paste,selectall)

 addButton(toolbarName,toolbarCommand) #调用添加按钮的函数

 toolbar.pack(fill=X)

 text = Text(root,width=4,wrap=CHAR,height=1)

 text.pack(side=LEFT,fill=Y)

 textPad = Text(root,undo=True)

 textPad.pack(expand=YES,fill=BOTH)

 textPad.focus_set()

 scroll = Scrollbar(textPad)

 textPad.config(yscrollcommand=scroll.set)

 scroll.config(command=textPad.yview)

 scroll.pack(side=RIGHT,fill=Y)

 timer_interval = 1

 def getline():

     global t,row

     row,col = textPad.index(INSERT).split('.')

     lineNum = 'Ln:  ' +row+'   '+'Co:  '+col

     var.set(lineNum)

     t = Timer(timer_interval,getline)

     t.start()

 t = Timer(timer_interval,getline)

 t.start()

 var = StringVar()

 status = Label(root,anchor=E,height=1,text='Ln',relief=FLAT,takefocus=False,textvariable=var,padx=2)

 status.pack(fill=X)

 mainloop()