def close(self):
        """Closes the reader, terminating the subprocess if is still alive."""
        if self.proc:
            if self.proc.poll() is None:
                self.proc.terminate()
                self.proc.stdout.close()
                self.proc.stderr.close()
                self.proc.wait()
            self.proc = None
Closes the reader, terminating the subprocess if is still alive.
moviepy/audio/io/readers.py