django CBV mutliple forms mixin

MultipleFormsCBV.py

class MultipleFormxMixin(object):
    form_classes = []
    initials = {}
    prefixes = {}
    form_names = []

    def get_forms(self, names=None):
        names = names or self.form_names

        if len(names) != len(self.form_classes):
            raise Exception('Number of forms and names isn\'t the same')
        return dict(zip(
            names,
            [form(**self.get_form_kwargs(form))
                for form in self.form_classes]))

    def get_initial(self, form):
        try:
            return self.initials[form].copy()
        except KeyError:
            return {}

    def get_prefix(self, form):
        try:
            return self.prefixes[form]
        except KeyError:
            return None

    def get_form_kwargs(self, form):
        """
        Returns the keyword arguments for instantiating the form.
        """
        kwargs = {
            'initial': self.get_initial(form),
            'prefix': self.get_prefix(form),
        }
        if self.request.method in ('POST', 'PUT'):
            kwargs.update({
                'data': self.request.POST,
                'files': self.request.FILES,
            })
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(MultipleFormxMixin, self).get_context_data(**kwargs)
        for name, form in self.get_forms(self.form_names).items():
            if name not in kwargs:
                context[name] = form
        return context