human
Complete this python program:
def email_inbox():
assistant
#Here is the Python program you requested.

    """RESTful CRUD controller for the Email Inbox
    - all Inbound Email Messages are visible here
    @ToDo: Filter to those which have been unable to be automatically
    processed as being responses to Alerts
    @ToDo: Filter to those coming into the specific account used for
    Deployments
    @ToDo: Provide a mechanism (Action button?) to link a mail manually to
    an Alert
    """
    if (not auth.s3_logged_in()):
        session.error = T('Requires    Login!')
        redirect(URL(c='default', f='user', args='login'))
    tablename = 'msg_email'
    table = s3db.msg_email
    table.inbound.readable = False
    table.channel_id.readable = False
    table.to_address.readable = False
    from s3.s3query import FS
    s3.filter = ((FS('response.id') == None) & (FS('inbound') == True))
    from s3.s3forms import S3SQLCustomForm, S3SQLInlineComponent
    crud_form = S3SQLCustomForm('date', 'subject', 'from_address', 'body', S3SQLInlineComponent('attachment', name='document_id', label=T('Attachments'), fields=['document_id']))
    s3db.configure(tablename, crud_form=crud_form, editable=False, insertable=False, list_fields=['id', 'date', 'from_address', 'subject', 'body', (T('Attachments'), 'attachment.document_id')])
    s3.crud_strings[tablename] = Storage(title_list=T('View    InBox'), title_update=T('Edit    Message'), label_list_button=T('View    InBox'), label_delete_button=T('Delete    Message'), msg_record_modified=T('Message    updated'), msg_record_deleted=T('Message    deleted'), msg_list_empty=T('No    Messages    currently    in    InBox'))
    def prep(r):
        decode = current.msg.decode_email
        if r.id:
            s3db.msg_attachment.document_id.label = ''
            if (r.component and (r.component.alias == 'select')):
                if (not r.method):
                    r.method = 'select'
                if (r.method == 'select'):
                    r.custom_action = s3db.deploy_response_select_mission
            represent = (lambda string: decode(string))
        elif ((not r.method) and (r.representation in ('html', 'aadata'))):
            r.method = 'inbox'
            r.custom_action = s3db.deploy_Inbox()
            represent = (lambda string: s3base.s3_datatable_truncate(decode(string)))
        table = r.resource.table
        table.subject.represent = represent
        table.from_address.represent = represent
        return True
    s3.prep = prep
  ...