def METHOD_NAME(self):
    """
    Verifiy that the values entered into the two password fields
    match. Note that an error here will end up in
    ``non_field_errors()`` because it doesn't apply to a single
    field.
    """
    if 'password1' in self.cleaned_data and 'password2' in self.cleaned_data:
        if self.cleaned_data['password1'] != self.cleaned_data['password2']:
            raise forms.ValidationError(_("The two password fields didn't match."))
    return self.cleaned_data