def on_cleanup_error(function, path, excinfo):
                click.secho("warning: failed to remove file or directory: {}\n"
                            "please delete it manually.".format(path),
                            fg="red")
def path(self,x1,y1,x2,y2):
		self.board[y1:y2+1,x1:x2+1] = self.color