python记事本，采用tkinter组件，完成菜单栏，上下文菜单，状态栏，快捷键

import tkinter as tk 
import tkinter.scrolledtext as tst

#v = tk.StringVar()
class Application(tk.Frame):
    def __init__(self, master=None):  
        tk.Frame.__init__(self, master)
        self.grid()
        self.createWidgets()     
        self.createMenu()         
        root['menu'] = self.menubar 
        root.bind('', self.f_popup)
        #root.bind('', self.callback)

         # 状态栏
        self.status = tk.StringVar()
        self.status.set('Ln: 1 Col: 1')
        self.lblStatus = tk.Label(self, textvariable=self.status, anchor='c')
        self.lblStatus.grid(row=7, column=0, columnspan=20, sticky = tk.S + tk.E)
        root.bind('', self.loc)
        root.bind('', self.loc)
        
    def createWidgets(self):             
        self.textEdit = tst.ScrolledText(self, width=80, height=25)
        self.textEdit.grid(row=0, column=0, rowspan=6)
        
        '''
        self.lblState = tk.Label(self, text="状态栏:")
        self.lblState.grid(row=7, column=0, columnspan=10)
        self.entryState = tk.Entry(self, textvariable=v)
        self.lblState.grid(row=7, column=11, columnspan=20)
        '''
        
    def createMenu(self):              
        self.menubar = tk.Menu(root)   
        #创建子菜单
        self.menufile  = tk.Menu(self.menubar)     
        self.menuedit = tk.Menu(self.menubar, tearoff=0) 
        self.menuhelp = tk.Menu(self.menubar, tearoff=0)
        self.menubar.add_cascade(label='File', menu=self.menufile)
        self.menubar.add_cascade(label="Edit", menu=self.menuedit)
        self.menubar.add_cascade(label="Help", menu=self.menuhelp)
        
        #添加菜单项
        self.menufile.add_command(label='New', command=self.f_new)
        self.menufile.bind("", self.f_new)
        self.menufile.add_command(label='Open', command=self.f_open)
        self.menufile.bind("", self.f_open)
        self.menufile.add_command(label='Save', accelerator='^A', 
command=self.f_save)
        self.menufile.bind("", self.f_save)
        #分隔
        self.menufile.add_separator()  
        self.menufile.add_command(label='Exit', command=root.destroy) 
        self.menuedit.add_command(label="Cut", command=self.f_cut, accelerator='Ctrl+T')
        self.menuedit.bind("", self.f_cut)
        self.menuedit.add_command(label="Copy", command=self.f_copy, accelerator='Ctrl+C')
        self.menuedit.bind("", self.f_copy)
        self.menuedit.add_command(label="Paste", command=self.f_paste, accelerator='Ctrl+V')
        self.menuedit.bind("", self.f_paste)
        self.menuedit.add_command(label="Delete", command=self.f_delete, accelerator='Ctrl+D')
        self.menuedit.bind("", self.f_delete)
        self.menuhelp.add_command(label="About", command=self.f_about)
    def f_new(self):
        root.title('untitle')       #新建文件title
        self.textEdit.delete(1.0, tk.END)  
    def f_open(self):           
        self.textEdit.delete(1.0, tk.END) 
        fname = tk.filedialog.askopenfilename(filetypes=[('Python源文件','.py')])
        with open(fname, 'r', encoding= 'utf-8') as f1: 
            str1 = f1.read()                
        self.textEdit.insert(0.0, str1)         
    def f_save(self):          
        str1 = self.textEdit.get(1.0, tk.END)   
        fname = tk.filedialog.asksaveasfilename(filetypes=[('Python源文件','.py')])
        with open(fname, 'w', encoding= 'utf-8') as f1:  #打开文件
            f1.write(str1)      
    def f_about(self):           
        tk.messagebox.showinfo('关于', '版本V 1.0.1')
    def f_cut(self):
        try:
            str1=self.textEdit.get(tk.SEL_FIRST, tk.SEL_LAST)
            self.textEdit.clipboard_clear()        
            self.textEdit.clipboard_append(str1)    
            self.textEdit.delete(tk.SEL_FIRST, tk.SEL_LAST)
        except: pass
    def f_copy(self):           
        try:
            str1=self.textEdit.get(tk.SEL_FIRST, tk.SEL_LAST)
            self.textEdit.clipboard_clear()        
            self.textEdit.clipboard_append(str1)   
        except: pass
    def f_paste(self):          
        str1 = self.textEdit.selection_get(selection='CLIPBOARD')
        try:           
            self.textEdit.replace(tk.SEL_FIRST, tk.SEL_LAST, str1)
        except:
            self.textEdit.insert(tk.INSERT, str1)
    def f_delete(self):          
        try:
            str1=self.textEdit.get(tk.SEL_FIRST, tk.SEL_LAST) 
            self.textEdit.delete(tk.SEL_FIRST, tk.SEL_LAST)
        except: pass
    #定位光标位置，缺点读字符串的位置。。，不知道换行在哪里，仍需加强条件调试。
    def loc(self,event=None):
        s = str(self.textEdit.index('insert')).split('.')
        statusXY = 'Ln: ' + str(s[0]) + 'Col: ' + str(s[1])
        self.status.set(statusXY)

    def f_popup(self, event):   
        self.menuedit.post(event.x_root, event.y_root)
        

root = tk.Tk()                
root.title('文本编辑器')
app = Application(master=root)   
app.mainloop()               

结果显示：