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感谢莫烦
演示效果
![在这里插入图片描述](https://img-blog.csdnimg.cn/20200406105539527.gif)
创建windows
window = tk.Tk()
window.title('my window')
window.geometry('500x500')
创建显示label
var1 = tk.StringVar()
l = tk.Label(window, bg='yellow', width=4, textvariable=var1)
l.pack()
循环刷新窗口
window.mainloop() # 不断刷新主窗口
忽略一些奇奇怪怪的套路,仔细看文字和对应的布局代码!
![在这里插入图片描述](https://img-blog.csdnimg.cn/20200406113511642.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTM1NTU3MTk=,size_16,color_FFFFFF,t_70)
menubar = tk.Menu(window)
filemenu = tk.Menu(menubar, tearoff=0)
menubar.add_cascade(label='File', menu=filemenu)
filemenu.add_command(label='New', command=do_job)
filemenu.add_command(label='Open', command=do_job)
filemenu.add_command(label='Save', command=do_job)
filemenu.add_separator()
filemenu.add_command(label='Exit', command=window.quit)
submenu = tk.Menu(filemenu)
filemenu.add_cascade(label='Import', menu=submenu, underline=0)
submenu.add_command(label="Submenu1", command=do_job)
editmenu = tk.Menu(menubar, tearoff=0)
menubar.add_cascade(label='Edit', menu=editmenu)
editmenu.add_command(label='Cut', command=do_job)
editmenu.add_command(label='Copy', command=do_job)
editmenu.add_command(label='Paste', command=do_job)
window.config(menu=menubar)
do_job函数
counter = 0
def do_job():
global counter
l.config(text='do '+ str(counter))
counter+=1