human
I wrote the below code

    idn_codes = set(['afr', 'alb', 'ara', 'arg', 'arm', 'asm', 'ast', 'ave', 'awa', 'aze', 'bak', 'bal', 'ban', 'baq', 'bas', 'bel', 'ben', 'bho', 'bos', 'bul', 'bur', 'car', 'cat', 'che', 'chi', 'chv', 'cop', 'cos', 'cze', 'dan', 'div', 'doi', 'dut', 'eng', 'est', 'fao', 'fij', 'fin', 'fre', 'fry', 'geo', 'ger', 'gla', 'gle', 'gon', 'gre', 'guj', 'heb', 'hin', 'hun', 'inc', 'ind', 'inh', 'isl', 'ita', 'jav', 'jpn', 'kas', 'kaz', 'khm', 'kir', 'kor', 'kur', 'lao', 'lav', 'lit', 'ltz', 'mal', 'mkd', 'mlt', 'mol', 'mon', 'mri', 'msa', 'nep', 'nor', 'ori', 'oss', 'pan', 'per', 'pol', 'por', 'pus', 'raj', 'rum', 'rus', 'san', 'scr', 'sin', 'slo', 'slv', 'smo', 'snd', 'som', 'spa', 'srd', 'srp', 'swa', 'swe', 'syr', 'tam', 'tel', 'tgk', 'tha', 'tib', 'tur', 'ukr', 'urd', 'uzb', 'vie', 'wel', 'yid'])
    require_opts = ['AdminAddress1', 'AdminCity', 'AdminCountry', 'AdminEmailAddress', 'AdminFirstName', 'AdminLastName', 'AdminPhone', 'AdminPostalCode', 'AdminStateProvince', 'AuxBillingAddress1', 'AuxBillingCity', 'AuxBillingCountry', 'AuxBillingEmailAddress', 'AuxBillingFirstName', 'AuxBillingLastName', 'AuxBillingPhone', 'AuxBillingPostalCode', 'AuxBillingStateProvince', 'RegistrantAddress1', 'RegistrantCity', 'RegistrantCountry', 'RegistrantEmailAddress', 'RegistrantFirstName', 'RegistrantLastName', 'RegistrantPhone', 'RegistrantPostalCode', 'RegistrantStateProvince', 'TechAddress1', 'TechCity', 'TechCountry', 'TechEmailAddress', 'TechFirstName', 'TechLastName', 'TechPhone', 'TechPostalCode', 'TechStateProvince', 'Years']
    opts = salt.utils.namecheap.get_opts('namecheap.domains.create')
    opts['DomainName'] = domain_name
    opts['Years'] = str(years)
    def add_to_opts(opts_dict, kwargs, value, suffix, prefices):
        for prefix in prefices:
            nextkey = (prefix + suffix)
            if (nextkey not in kwargs):
                opts_dict[nextkey] = value
    for (key, value) in six.iteritems(kwargs):
        if key.startswith('Registrant'):
            add_to_opts(opts, kwargs, value, key[10:],...

What's a good function header?

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What is a Python code to fix in prefices:?
assistant
#Here is Python code to fix in prefices:
.

def create(domain_name, years, **kwargs):