python3中，用Tkinter编写记事本功能

python3中，用Tkinter编写记事本功能

from tkinter import *from tkinter.filedialog import *from tkinter.messagebox import *import osfilename=""def author():    showinfo(title="作者",message="木里")def power():    showinfo(title="版权信息",message="2017-12-14-14:40 周四 北京邮电大学")def mynew():    global top,filename,textPad    top.title("未命名文件")    filename=None    textPad.delete(1.0,END)def myopen():    global filename    filename=askopenfilename(defaultextension=".txt")    if filename=="":        filename=None    else:        top.title("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 mysave():    global filename    try:        f=open(filename,'w')        msg=textPad.get(1.0,'end')        f.write(msg)        f.close()    except:        mysaveas()def mysaveas():    global filename    f=asksaveasfilename(initialfile="未命名.txt",defaultextension=".txt")    filename=f    fh=open(f,'w')    msg=textPad.get(1.0,END)    fh.write(msg)    fh.close()    top.title("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.event_generate("<<Cut>>")    textPad.tag_add("sel","1.0","end")def find():    t=Toplevel(top)    t.title("查找")    t.geometry("260x60+200+250")    t.transient(top)    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",variable=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 mypopup(event):    # global editmenu    editmenu.tk_popup(event.x_root,event.y_root)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',fg='yellow',bg="green")        e.focus_set()        t.title(str(count)+"个被匹配")top=Tk()top.title("记事本")top.geometry("1000x600+100+50")menubar=Menu(top)# 文件功能filemenu=Menu(top)filemenu.add_command(label="新建",accelerator="Ctrl+N",command=mynew)filemenu.add_command(label="打开",accelerator="Ctrl+O",command=myopen)filemenu.add_command(label="保存",accelerator="Ctrl+S",command=mysave)filemenu.add_command(label="另存为",accelerator="Ctrl+shift+s",command=mysaveas)menubar.add_cascade(label="文件",menu=filemenu)# 编辑功能editmenu=Menu(top)editmenu.add_command(label="撤销",accelerator="Ctrl+Z",command=undo)editmenu.add_command(label="重做",accelerator="Ctrl+Y",command=redo)editmenu.add_separator()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)menubar.add_cascade(label="编辑",menu=editmenu)# 关于 功能aboutmenu=Menu(top)aboutmenu.add_command(label="作者",command=author)aboutmenu.add_command(label="版权",command=power)menubar.add_cascade(label="关于",menu=aboutmenu)top['menu']=menubarshortcutbar=Frame(top,height=25,bg='light sea green')shortcutbar.pack(expand=NO,fill=X)Inlabe=Label(top,width=2,bg='antique white')Inlabe.pack(side=LEFT,anchor='nw',fill=Y)textPad=Text(top,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)# 热键绑定textPad.bind("<Control-N>",mynew)textPad.bind("<Control-n>",mynew)textPad.bind("<Control-O>",myopen)textPad.bind("<Control-o>",myopen)textPad.bind("<Control-S>",mysave)textPad.bind("<Control-s>",mysave)textPad.bind("<Control-A>",select_all)textPad.bind("<Control-a>",select_all)textPad.bind("<Control-F>",find)textPad.bind("<Control-f>",find)textPad.bind("<Button-3>",mypopup)top.mainloop()