Aqui está meu código:
from tkinter import * from tkinter import messagebox def add(a, b): messagebox.showinfo("Resultado", a.get()+b.get()) win=Tk() win.geometry('300x200') a=StringVar() b=StringVar() in1=Entry(win, textvariable=a) in2=Entry(win, textvariable=b) btn=Button(win, text="Somar", activebackground='green', command=add(a,b)) in1.pack() in2.pack() btn.pack() win.mainloop()
Quando executo a janela “Resultado” aparece logo mesmo não tendo clicado no botão “btn”. E porque preciso importar ‘messagebox’ em separado mesmo já tendo importado todo módulo tkinter antes?
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