python - Tkinter GUI problems -


im working on project not going well.
code: 

from tkinter import *  def newfile():     new = label(root, text="about \n") def openfile():     openf = label(root, text="about \n") def about():     = label(root, text="about \n")  root = tk() menu = menu(root) root.config(menu=menu) filemenu = menu(menu) menu.add_cascade(label="file", menu=filemenu) filemenu.add_command(label="new", command=newfile) filemenu.add_command(label="open...", command=openfile) filemenu.add_separator() filemenu.add_command(label="exit", command=root.quit)  helpmenu = menu(menu) menu.add_cascade(label="help", menu=helpmenu) helpmenu.add_command(label="about...", command=about) body = label(root, text="") mainloop()

doesnt work how need it.
suposed write certant messages when click file > new, file > open , help > about.

it nothing

how can make i want?

from tkinter import *    root = tk() menu = menu(root) root.config(menu=menu) filemenu = menu(menu) my_label = label(root, text="select menu") my_label.place(x=10,y=10)  def my_command(query):     my_label.config(text=query)  menu.add_cascade(label="file", menu=filemenu) filemenu.add_command(label="new", command=lambda x = "new":my_command(x)) filemenu.add_command(label="open...", command=lambda x = "open...":my_command(x)) filemenu.add_separator() filemenu.add_command(label="exit", command=root.destroy)  helpmenu = menu(menu) menu.add_cascade(label="help", menu=helpmenu) helpmenu.add_command(label="about...", command=lambda x = "about...":my_command(x)) body = label(root, text="") mainloop()

@lafexlos correct. can use python types(list,dict,var , more...) on gui design, important point how manage gui elements, need accessible status.

don't destroy gui element, change , reuse it.

don't include external command mainloop(like:file,network, etc.)

all gui application required 3 critical section : init >> build >> run otherwise got lot painful.

use gui elements text variable, of-course if element accesible !

i hope helpful , accept @lafexlos answer not ! code work on python2.7


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