Fixed #10017 - PasswordResetForm.clean_email was not returning the value.

        self.users_cache = User.objects.filter(email__iexact=email)

        if len(self.users_cache) == 0:

            raise forms.ValidationError(_("That e-mail address doesn't have an associated user account. Are you sure you've registered?"))

        return email

    def save(self, domain_override=None, email_template_name='registration/password_reset_email.html',

             use_https=False, token_generator=default_token_generator):

False

>>> form['username'].errors

[u'This value must contain only letters, numbers and underscores.']

### PasswordResetForm

>>> from django.contrib.auth.forms import PasswordResetForm

>>> data = {'email':'not valid'}

>>> form = PasswordResetForm(data)

>>> form.is_valid()

False

>>> form['email'].errors

[u'Enter a valid e-mail address.']

# Test nonexistant email address

>>> data = {'email':'foo@bar.com'}

>>> form = PasswordResetForm(data)

>>> form.is_valid()

False

>>> form.errors

{'email': [u"That e-mail address doesn't have an associated user account. Are you sure you've registered?"]}

# Test cleaned_data bug fix

>>> user = User.objects.create_user("jsmith3", "jsmith3@example.com", "test123")

>>> data = {'email':'jsmith3@example.com'}

>>> form = PasswordResetForm(data)

>>> form.is_valid()

True

>>> form.cleaned_data['email']

u'jsmith3@example.com'

"""