import time
from Tkinter import *
 
class TimestampClock(Frame):
    def __init__(self, root):
        Frame.__init__(self, root)
        self.pack()
        self.time = Label(self, text=int(time.time()))
        self.time.config(fg='red', font=('Monospace', 20, 'bold'))
        self.time.pack(padx=10, pady=10)
        self.update()
 
    def update(self):
        self.time.config(text=int(time.time()))
        self.after(1000, self.update)
 
if __name__ == "__main__":
    root = Tk()
    root.title("Timestamp-Clock")
    root.wm_attributes("-topmost", 1)
    root.resizable(0,0)
    root.minsize(300,50)
    TimestampClock(root).mainloop()