from threading import Thread

class a:
    def Exit(self):
        exit()
    def what(self):
        self.w =Thread(target=self.Exit)
        self.w.start()
        self.w.join()

a().what()
input("Enter something:")


-------__Error------------
zenix@linux-xk05:~/Desktop> python image.py
Enter something:Traceback (most recent call last):
  File "image.py", line 15, in <module>
    input("Enter something:")
ValueError: I/O operation on closed file.