(fd, data)
Write all the data to a descriptor.
Write all the data to a descriptor.
Write all the data to a descriptor .
def _writen(fd, data):
    """Write all the data to a descriptor."""
    while data:
        n = os.write(fd, data)
        data = data[n:]
def _writen ( fd , data ) : while data : n = os . write ( fd , data ) data = data [ n : ]