Custom Field using MultiValueField in Django

class AddressField(forms.MultiValueField):
    """
    Custom field to take user inputs of Address
    """
        
    def __init__(self, country_choices, city_choices, locality_choices, attrs=None):
        self.widget = AddressWidget(country_choices,city_choices,locality_choices)
        fields = (forms.CharField(label=_('Address Line 1'), max_length=100), forms.CharField(label=_('Address Line 2'), max_length=100), forms.ChoiceField(label=_('Country'), choices=country_choices), forms.ChoiceField(label=_('City'), choices=city_choices), forms.ChoiceField(label=_('Locality'), choices=locality_choices))
        super(AddressField, self).__init__(fields, required=False)

    def clean(self, value, initial=None):
        value = super(AddressField, self).clean(value)
        return value

    def compress(self, value_list):
        if value_list:
            return value_list
        return [[],[],[]]