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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def Unlock(fd, path):
 """Release the lock on the file. Args: fd: int, the file descriptor of the file to unlock. path: string, the name of the file to lock. Raises: IOError, raised from flock while attempting to release a file lock. """

  try:
    fcntl.flock(fd, fcntl.LOCK_UN | fcntl.LOCK_NB)
  except IOError as e:
    if e.errno == errno.EWOULDBLOCK:
      raise IOError('Exception unlocking %s. Locked by another process.' % path)
    else:
      raise IOError('Exception unlocking %s. %s.' % (path, str(e)))