human
I wrote the below code

    T = current.T
    db = current.db
    s3db = current.s3db
    get_vars = current.request.get_vars
    response = current.response
    s3 = response.s3
    session = current.session
    settings = current.deployment_settings
    resourcename = 'person'
    configure = s3db.configure
    set_method = s3db.set_method
    set_method('pr', resourcename, method='contacts', action=s3db.pr_Contacts)
    set_method('pr', resourcename, method='cv', action=s3db.hrm_CV)
    set_method('pr', resourcename, method='record', action=s3db.hrm_Record)
    if settings.has_module('asset'):
        s3db.add_components('pr_person', asset_asset='assigned_to_id')
        configure('asset_asset', deletable=False, editable=False, insertable=False)
    group = get_vars.get('group', 'volunteer')
    hr_id = get_vars.get('human_resource.id', None)
    if (not str(hr_id).isdigit()):
        hr_id = None
    table = s3db.hrm_human_resource
    table.type.default = 2
    get_vars['xsltmode'] = 'volunteer'
    if hr_id:
        hr = db((table.id == hr_id)).select(table.type, limitby=(0, 1)).first()
        if hr:
            group = (((hr.type == 2) and 'volunteer') or 'staff')
            get_vars['group'] = group
    tablename = 'pr_person'
    table = s3db[tablename]
    configure(tablename, deletable=False)
    s3.crud_strings[tablename].update(title_display=T('Volunteer    Details'), title_update=T('Volunteer    Details'), title_upload=T('Import    Volunteers'))
    s3.importerPrep = (lambda : dict(ReplaceOption=T('Remove    existing    data    before    import')))
    def import_prep(data, group=group):
        '\n                                                Deletes    all    HR    records    (of    the    given    group)    of    the    organisation\n                                                before    processing    a    new    data    import,    used    for    the    import_prep\n                                                hook    in    response.s3\n                                '
        (resource, tree) = data
    ...

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

def vol_person_controller():