以下内容参考《辛星tkinter教程第二版》：
from tkinter import * from tkinter.filedialog import * from tkinter.messagebox import * import os filename='' def author(): showinfo('大道至简','简易记事本第一版') def power(): showinfo('版权信息','本公司保留版权信息，不可以把本软件用于商业目的！') def myopen(): global filename filename=askopenfilename(defaultextension='.txt') if filename=='': filename=None else: root.title('简易记事本'+os.path.basename(filename)) textPad.delete(1.0,END) f=open(filename,'r') textPad.insert(1.0,f.read()) f.close() def new(): global root,filename,textPad root.title('未命名文件') filename=None textPad.delete(1.0,END) def save(): global filename try: f=open(filename,'w') msg=textPad.get(1.0,'end') f.write(msg) f.close() except: saveas() def saveas(): f=asksaveasfile(initialfile='未命名.txt',defaultextension='.txt') global filename filename=f fh=open(f,'w') msg=textPad.get(1.0,END) fh.write(msg) fh.close() root.title('简易记事本'+os.path.basename(f)) def cut(): global textPad textPad.event_generate('<<Cut>>') def copy(): global textPad textPad.event_generate('<<Copy>>') def paste(): global textPad textPad.event_generate('<<Paste>>') def undo(): global textPad textPad.event_generate('<<Undo>>') def redo(): global textPad textPad.event_generate('<<Redo>>') def select_all(): global textPad textPad.tag_add('sel','1.0','end') def find(): global root t=Toplevel(root) t.title('查找') t.geometry('260x60+200+250') t.transient(root) Label(t,text='查找：').grid(row=0,column=0,sticky='e') v=StringVar() e=Entry(t,width=20,textvariable=v) e.grid(row=0,column=1,padx=2,pady=2,sticky='we') e.focus_set() c=IntVar() Checkbutton(t,text='不区分大小写',variabel=c).grid(row=1,column=1,sticky='e') Button(t,text='查找所有',command=lambda :search(v.get(),c.get(),textPad,t,e)).grid(row=0, column=2,sticky='e'+'w',padx=2,pady=2) def close_search(): textPad.tag_remove('match','1.0',END) t.destroy() t.protocol('WM_DELETE_WINDOW',close_search)#??? def search(needle,cssnstv,textPad,t,e): textPad.tag_remove('match','1.0',END) count=0 if needle: pos='1.0' while True: pos=textPad.search(needle,pos,nocase=cssnstv,stopindex=END) if not pos:break lastpos=pos+str(len(needle)) textPad.tag_add('match',pos,lastpos) count+=1 pos=lastpos textPad.tag_config('match',foreground='yellow',background='green') e.focus_set() t.title(str(count)+'个被匹配') def popup(event): global editmenu editmenu.tk_popup(event.x_root,event.y_root) root=Tk() root.title('简易记事本第一版') root.geometry('300x300+100+100')#geometry(wxh+xoffset+yoffset) menubar=Menu(root)#制作菜单实例，依附于父窗口root上面 filemenu=Menu(menubar)#制作文件菜单项，依附于menubar菜单上面 menubar.add_cascade(label='文件',menu=filemenu)#增加分层菜单 filemenu.add_command(label='新建',accelerator='Ctrl+N',command=new) filemenu.add_command(label='打开',accelerator='Ctrl+O',command=myopen) filemenu.add_command(label='保存',accelerator='Ctrl+S',command=save) filemenu.add_command(label='另存为',accelerator='Ctrl+Alt+S',command=saveas) editmenu=Menu(menubar)#制作编辑菜单项，依附于menubar菜单上面 menubar.add_cascade(label='编辑',menu=editmenu) editmenu.add_command(label='撤销',accelerator='Ctrl+Z',command=undo) editmenu.add_command(label='重做',accelerator='Ctrl+Y',command=redo) editmenu.add_command(label='剪切',accelerator='Ctrl+X',command=cut) editmenu.add_command(label='复制',accelerator='Ctrl+C',command=copy) editmenu.add_command(label='粘贴',accelerator='Ctrl+V',command=paste) editmenu.add_separator() editmenu.add_command(label='查找',accelerator='Ctrl+F',command=find) editmenu.add_command(label='全选',accelerator='Ctrl+A',command=select_all) aboutmenu=Menu(menubar)#制作关于菜单项，依附于menubar菜单上面 menubar.add_cascade(label='关于',menu=aboutmenu)#增加分层菜单 aboutmenu.add_command(label='作者',command=author) aboutmenu.add_command(label='版权',command=power) root.config(menu=menubar) shortcutbar=Frame(root,height=25,bg='light sea green') shortcutbar.pack(expand=NO,fill=X) Inlabel=Label(root,width=2,bg='antique white') Inlabel.pack(side=LEFT,anchor='nw',fill=Y) textPad=Text(root,undo=True) textPad.pack(expand=YES,fill=BOTH) scroll=Scrollbar(textPad) textPad.config(yscrollcommand=scroll.set) scroll.config(command=textPad.yview) scroll.pack(side=RIGHT,fill=Y) textPad.bind('<Control-N>',new) textPad.bind('<Control-n>',new) textPad.bind('<Control-O>',myopen) textPad.bind('<Control-o>',myopen) textPad.bind('<Control-S>',save) textPad.bind('<Control-s>',save) textPad.bind('<Control-A>',select_all) textPad.bind('<Control-a>',select_all) textPad.bind('<Control-f>',find) textPad.bind('<Control-F>',find) textPad.bind('<Control-3>',popup) root.mainloop()