<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def render_secretfile(opt):
 """Renders and returns the Secretfile construct"""

    LOG.debug("Using Secretfile %s", opt.secretfile)
    secretfile_path = abspath(opt.secretfile)
    obj = load_vars(opt)
    return render(secretfile_path, obj)