Python 3 Tkinter GUI Time Converter Script pour convertir les secondes en heures, minutes et secondes (H:M:S) Application de bureau au format

#("Times", "24", "bold italic")
#("Helvetica", "16")
import tkinter

class Converter():
    def __init__(self):

        self._a = tkinter.Tk()
        self._a.title('Seconds Coneverter')
        tkinter.Label(master = self._a, text = 'Seconds: ').grid(row = 0,column =0,sticky = tkinter.W)
        tkinter.Label(master = self._a, text = 'Converted Time:n (H:M:S) ').grid(row = 1,column =0,sticky = tkinter.W)

        tkinter.Button(master = self._a,text = 'Calculate',
                       font= ('Helvetic',15),command = self.ptext).grid(row = 2,column =0, 
                                                                       sticky = tkinter.SW)
        tkinter.Button(master = self._a,text = 'Quit',
                       font= ('Helvetic',15),command = self.destroy).grid(row = 2,column =2,
                                                                       sticky = tkinter.SE)
        self._l = tkinter.Label(master = self._a, textvariable = '')
        self._l.grid(row = 1,column =1)


        
        self._s = tkinter.StringVar()
        e = tkinter.Entry(master = self._a , textvariable = self._s)
        e.grid(row=0,column=1)
       
        
        
    def run(self):
        self._a.mainloop()


    def ptext(self):
        self._s2 = tkinter.StringVar()
        self._l.destroy()
        try:
            self._text = int(self._s.get())
            self._hour = self._text //(60**2)
            self._minute = self._text%3600 //(60)
            self._second = self._text%3600%60
            self._s2.set(str(self._hour).zfill(2)+':'+
                         str(self._minute).zfill(2)+':'+
                         str(self._second).zfill(2))
        except:
            self._s2.set('Invalid Input')
        finally:
            self._l = tkinter.Label(master = self._a, textvariable = self._s2)
            self._l.grid(row = 1,column =1)

    def destroy(self):
        return self._a.destroy()

Converter().run()