- To make the Label update, set
textvariable=self.globvar, whereself.globvar = tk.StringVar(). The Label text is updated by calling self.globvar.set. - Change
command=self.calc() to command=self.calc (withoutparentheses). With parentheses, self.calc() is called at the timeself.buttn is defined. And command gets set to the return value ofself.calc(), which is None. Nothing happens when the button ispressed because command equals None. Without parentheses,command is set to the function object self.calc, and thefunction is called (correctly) whenever the button is pressed. - Try to avoid using global variables. It will help
Shuffle to be self-contained, more easily reusable and importable.
import Tkinter as tkimport sys, randomclass Shuffle(object): def __init__(self,master=None): self.master=master self.text=tk.Label(master, text="Type in something:") self.box=tk.Entry(master) self.buttn = tk.Button(master, text="Done", width=10, command=self.calc) self.globvar = tk.StringVar() self.globvar.set(0) self.result = tk.Label(self.master, textvariable=self.globvar) def hide(self): self.text.pack_forget() self.box.pack_forget() self.buttn.pack_forget() self.result.pack_forget() def show(self): self.text.pack(padx=2, pady=2) self.box.focus_set() self.box.pack(side=tk.TOP, padx=3, pady=3) self.buttn.pack(side=tk.TOP, padx=3, pady=3) self.result.pack(side=tk.TOP, padx=3, pady=3) def calc(self): word = self.box.get() while len(word) != 0: i = random.randrange(0, len(word)) self.globvar.set(word[i]) word = word[0:i] + word[i+1:]class MainApp(object): def __init__(self,master=None): self.master=master app=self.app=tk.Tk() app.title("Mkee's Tools") app.geometry('500x500') menubar=tk.Menu(app) self.shuffle=Shuffle(master) self.current=self.shuffle program_menu=tk.Menu(menubar) program_menu.add_command(label='Shuffle',command=self.show_shuffle) menubar.add_cascade(label='Programs', menu=program_menu) app.config(menu=menubar) def show_shuffle(self): self.current.hide() self.current=self.shuffle self.shuffle.show() def show_buttons(self): self.current.hide() self.current=self.buttons self.buttons.show()def main(): m=MainApp() m.app.mainloop()if __name__=='__main__': main()