In OpenERP first create partner and then validate the partner form. After this compare it with the membership of the other partner. Then standard dictionary for contextual values and the dictionary of Membership state Value.

Use this function show below

def state(self, cr, uid, ids, name, args, context=None):
    
        res = {}
        for id in ids:
            res[id] = 'none'
        today = time.strftime('%Y-%m-%d')
        for id in ids:
            partner_data = self.browse(cr, uid, id, context=context)
            if partner_data.membership_cancel and today > partner_data.membership_cancel:
                res[id] = 'canceled'
                continue
            if partner_data.membership_stop and today > partner_data.membership_stop:
                res[id] = 'old'
                continue
            s = 4
            if partner_data.member_lines:
                for mline in partner_data.member_lines:
                    if mline.date_to >= today:
                        if mline.account_invoice_line and mline.account_invoice_line.invoice_id:
                            mstate = mline.account_invoice_line.invoice_id.state
                            if mstate == 'paid':
                                s = 0
                                inv = mline.account_invoice_line.invoice_id
                                for payment in inv.payment_ids:
                                    if payment.invoice.type == 'out_refund':
                                        s = 2
                                break
                            elif mstate == 'open' and s!=0:
                                s = 1
                            elif mstate == 'cancel' and s!=0 and s!=1:
                                s = 2
                            elif  (mstate == 'draft' or mstate == 'proforma') and s!=0 and s!=1:
                                s = 3
                if s==4:
                    for mline in partner_data.member_lines:
                        if mline.date_from < today and mline.date_to < today and mline.date_from <= mline.date_to and (mline.account_invoice_line and mline.account_invoice_line.invoice_id.state) == 'paid':
                            s = 5
                        else:
                            s = 6
                if s==0:
                    res[id] = 'paid'
                elif s==1:
                    res[id] = 'invoiced'
                elif s==2:
                    res[id] = 'canceled'
                elif s==3:
                    res[id] = 'waiting'
                elif s==5:
                    res[id] = 'old'
                elif s==6:
                    res[id] = 'none'
            if partner_data.free_member and s!=0:
                res[id] = 'free'
            if partner_data.associate_member:
                res_state = self._membership_state(cr, uid, [partner_data.associate_member.id], name, args, context=context)
                res[id] = res_state[partner_data.associate_member.id]
        return res