Python Django - form.is_valid() keeps throwing unicode object has no attribute get error -

i creating form custom user type. each time submit form test it, returns error says unicode object has no attribute error.

forms.py:

class registrationform(forms.modelform):     """     form registering new account.     """     password1 = forms.charfield(widget=forms.passwordinput,                                 label="password")     password2 = forms.charfield(widget=forms.passwordinput,                                 label="password (again)")     class meta:         model = student         fields = ('firstname', 'lastname', 'email', 'password1', 'password2', 'is_second_year')      def clean(self):         # check 2 password entries match         password1 = self.cleaned_data.get("password1")         password2 = self.cleaned_data.get("password2")         if password1 , password2 , password1 != password2:             raise forms.validationerror("passwords don't match")         return password2      def save(self, commit=true):         user = super(registrationform, self).save(commit=false)         user.set_password(self.cleaned_data['password1'])         if commit:             user.save()         return user 

models.py:

class studentmanager(baseusermanager):     def create_user(self, firstname, lastname, email, is_second_year, password, is_officer=false, hours=0, points=0):         if not email:             raise valueerror("student must have email address.")          newstudent = self.model(             email = self.normalize_email(email),             firstname=firstname,             lastname=lastname,             is_officer=is_officer,             is_second_year=is_second_year,             hours=hours,             points=points         )          newstudent.set_password(password)         user.save(using=self.db)         return newstudent     def create_superuser(self, firstname, lastname, email, password, is_second_year, is_officer=true, hours=0, points=0):         newsuperstudent = self.create_user(             email = self.normalize_email(email),             firstname=firstname,             lastname=lastname,             is_officer=is_officer,             is_second_year=is_second_year,             hours=hours,             points=points,             password=password         )         newsuperstudent.is_admin = true         newsuperstudent.save(using=self.db)         return newsuperstudent   class student(abstractbaseuser):     firstname = models.charfield(verbose_name="first name", max_length=30, default="")     lastname = models.charfield(verbose_name="last name", max_length=30, default="")     email = models.emailfield(         verbose_name='email address',         max_length=255,         unique=true,         default=''     )     is_officer = models.booleanfield(default=false)     is_second_year = models.booleanfield(verbose_name="check box if second year in nhs")     hours = models.decimalfield(max_digits=5, decimal_places=2)     points = models.decimalfield(max_digits=3, decimal_places=1)      username_field = 'email'      def __unicode__(self):         return self.username 

views.py:

def sign_up(request):     # if post request need process form data     if request.method == 'post':         # create form instance , populate data request:         form = registrationform(request.post)         # check whether it's valid:         if form.is_valid():             print "money"             form.save()             # redirect new url:             return httpresponseredirect('/sign_up_success/')      # if (or other method) we'll create blank form     args = {}     args.update(csrf(request))      args['form'] = registrationform()     return render_to_response('events/sign_up.html', args) 

error location within .is_valid() method:

 field_value = self.cleaned_data.get(field, none) 

my guess reason, cleaned_data attribute of form unicode object rather dictionary. have no clue why so!

clean must return full cleaned_data dictionary, not single string field.