#Import os Library

import os

​

#Open a file

fd = os.open( "file.txt", os.O_RDWR|os.O_CREAT )

​

#Write a bytestring

str = b"test"

os.write(fd, str)

​

#Peform force write on file

os.fsync(fd)

​

#close the file

os.close(fd)

​