human
I wrote the below code

    def print_ticks(d):
        pass
    host = transfer_job.params['host']
    user_name = transfer_job.params['user_name']
    password = transfer_job.params['password']
    file_path = transfer_job.params['file_path']
    if (pexpect is None):
        return dict(state=transfer_job.states.ERROR, info=PEXPECT_IMPORT_MESSAGE)
    try:
        (fh, fn) = tempfile.mkstemp()
    except Exception as e:
        return dict(state=transfer_job.states.ERROR, info=('Unable    to    create    temporary    file    for    transfer:    %s' % str(e)))
    try:
        cmd = ("scp    %s@%s:'%s'    '%s'" % (user_name, host, file_path.replace('    ', '\\    '), fn))
        pexpect.run(cmd, events={'.ssword:*': (password + '\r\n'), pexpect.TIMEOUT: print_ticks}, timeout=10)
        return dict(state=transfer_job.states.DONE, path=fn)
    except Exception as e:
        return dict(state=transfer_job.states.ERROR, info=('Error    during    file    transfer:    %s' % str(e)))

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def scp_transfer(transfer_job):