code: def fi_iban_bank_info(v: str) -> (str, str):
      
      from jutil.bank_const_fi import FI_BIC_BY_ACCOUNT_NUMBER, FI_BANK_NAME_BY_BIC
      v = iban_filter(v)
      bic = FI_BIC_BY_ACCOUNT_NUMBER.get(v[4:7], None)
      return (bic, FI_BANK_NAME_BY_BIC[bic]) if bic is not None else ('', '')
docs: Returns BIC code and bank name from FI IBAN number.
      :param v: IBAN account number
      :return: (BIC code, bank name) or ('', '') if not found