Django:从html表单向模型插入值时找不到模型?

我正在尝试使用基本django表单向sqlite数据库插入值。

这些是我的设置

class Book(models.Model):

   def get_absolute_url(self):
        return reverse ('books:detail',kwargs={'pk':self.pk})

   def __str__(self):

    return self.name+ '-'+self.author
   name         = models.CharField(max_length=120)
   author       = models.CharField(max_length=120)
   genere       = models.CharField(max_length=120)
   year         = models.CharField(max_length=120)
   image        = models.ImageField(upload_to='img/',null=True,blank=True)

from django import forms
from .models import Book

SOME_CHOICES = (
        ('Science fiction','Science fiction'),
        ('Psychology','Psychology'),
        ('Philosophy','Philosophy'),
        ('Novel','Novel'),
        ('Poetry','Poetry'),

   )

class BookForm(forms.Form):

   name          = forms.CharField()
   author    = forms.CharField()
   genere       = forms.CharField(label='Text',widget= forms .Select
                                                  (choices=SOME_CHOICES))
   year         = forms.CharField()
   book_image   = forms.ImageField()

views.py

from django.shortcuts import render,redirect
from books.forms import BookForm
from django import forms
from books.models import Book
from django.forms import ModelForm
from django.core.urlresolvers import reverse_lazy
from django.views import generic
from django.shortcuts import render
from django.http import HttpResponse
from .models import Book
from django.views.generic  import (ListView,CreateView,UpdateView,DeleteView,TemplateView)
from django.template import loader
from django.http  import Http404
from django.views.generic.edit import CreateView
from django.core.urlresolvers import reverse

    def Book_Create_View(request):
        form=BookForm(request.POST,request.FILES)
        if form.is_valid():
            book_obj=models.Book()
            book_obj.name = request.POST.get("name")
            book_obj.author = request.POST.get("author")
            book_obj.genere = request.POST.get("genere")
            book_obj.year = request.POST.get("year")
            book_obj.image = request.FILES
            book_obj.save()
            return redirect('books:index')
        else:
            form = BookForm()
            template ='books/book_form.html'
            return render(request,template,{'form':form})

{% extends 'books/base.html'%}
 {%block content%}


                   <form class="form-horizontal" action="" method="post" enctype="multipart/form-data">
                        {% csrf_token %}
                         {{form}}

                        <div class="form-group">
                                <button type="submit" class="btn btn-sucess">Submit
                                </button>
                            </div>
                      </form>
{% endblock %}

url.py

from django.conf.urls import url
from .import views
from books.views import ListView,BookCategoryListView,BookCreateView,UpdateView,Book_Create_View
from books import views
app_name='books'

urlpatterns = [
    url(r'^$',views.IndexView.as_view(),name='index'),
    # url(r'bookadd/$',views.book_create_view,name='add'),
    # url(r'^add',views.book_create_view,name='book_add') ,
    # url(r'^create/$',views.BookCreateView.as_view(),name='create') ,
    url(r'^update/(?P<pk>\d+)/$',views.BookUpdateView.as_view(),name='update'),
    url(r'^delete/(?P<pk>\d+)/$',views.BookDeleteView.as_view(),name='delete'),
    url(r'^category/(?P<slug>\w+)$',views.BookCategoryListView.as_view()) ,
    url(r'^(?P<pk>[0-9]+)/$',views.DetailView.as_view(),name='detail'),
    url(r'^create/$',views.Book_Create_View,name='create') 
]

但它返回了一个错误

name 'models' is not defined

在我看来,url.py很好,因为我可以使用模型表单进行插入,它很好,但在这里它返回了错误

如何解决此问题并使用表单插入值?