from tkinter import *
root = Tk()
root.geometry("350x300")
root.resizable(0, 0)
root.config(bg="#5dd8e3")
root.title("Actualização de Rendas")
titulo = Label(text="Actualização de Rendas",
               font=("Arial", "20", "bold"),bg="#5dd8e3",fg="#0f7680")
titulo.place(relx=0.05, rely=0.05)
texto_sub1  = Label(text="Renda Actual:",
                    font=("Arial", "15", "bold"),bg="#5dd8e3",fg="#0f7680")
texto_sub1.place(relx=0.1, rely=0.25)
renda = DoubleVar()
renda_entrada = Entry(textvariable=renda,
                             font=("Arial", "12", "bold"),
                             bg="white", fg="blue", justify='center')
renda_entrada.place(relx=0.5, rely=0.25, relwidth=0.3)
def limpar():
    renda_entrada.delete(0, END)
    resultado.set("")
def app():
    aluger_actual = renda.get()
    aumento = 0.0694*aluger_actual
    aumentoarr = round(aumento,2)
    alugar_actualizado =aumentoarr +aluger_actual
    mensagem = f"O aumento da renda é de {aumentoarr} €\n " \
               f"A renda actalizado é de {alugar_actualizado} €."
    resultado.set(mensagem)
but1 = Button(text="Calcular", bd=2, bg='#107db2', fg='white',
              font=('verdana', 12, 'bold'),command=app)
but1.place(relx=0.05, rely=0.45, relwidth=0.25, relheight=0.1)
but_limpar = Button(text="Limpar", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=limpar)
but_limpar.place(relx=0.35, rely=0.45, relwidth=0.25, relheight=0.1)

but_sair = Button(text="Sair", bd=2, bg='#107db2', fg='white',
                    font=('verdana', 12, 'bold'), command=root.destroy)
but_sair.place(relx=0.65, rely=0.45, relwidth=0.25, relheight=0.1)

resultado = StringVar()
resultado_texto = Label(textvariable=resultado,
                           font=("Arial", 12, "bold"), bg="#cfe2f3")
resultado_texto.place(relx=0.05, rely=0.7, relwidth=0.9,relheight=0.25)
root.mainloop()