How to replace super().save() in MyCustomSignupForm when recaptcha is not confirmed

How to replace super().save() in MyCustomSignupForm when recaptcha is not confirmed

class MyCustomSignupForm(SignupForm):
    def save(self, request):
        token = request.POST['g-recaptcha-response']
        action = "signup"
        r_result = recaptcha(request, token, action)
        if r_result:
            user = super(MyCustomSignupForm, self).save(request)
        else:
            messages.warning(request, '...robot...')
            user = ???
            
        return user

Thanks Ben. Now I have calmed down the woodpecker that kept knocking on my registration form and creating a server error.

Code that works for me

class MyCustomSignupForm(SignupForm):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.request = kwargs.pop('data', None)

    def clean(self):
        cleaned_data = super().clean()
        token = self.request.get('g-recaptcha-response')
        action = "signup"
        r_result = recaptcha(token, action)
        if not r_result:
            raise ValidationError('Are you a robot?')
        return cleaned_data

p.s. Add a tag in the template

{{ form.non_field_errors }}