Django ImportError：名前をインポートできませんComment

Question

私はDjangoを初めて勉強しました。それはブログプロジェクトです。ブログを拡張しようとしたときにコメントを追加するアプリがあります。 imprtエラーを受け取っています。

forms.py以下のモデル、ビュー、フォーム、およびトレースバック

from django import forms 
from django.db import models 
from blog.models import Comment 

class EmailPostForm(forms.Form): 
    name = forms.CharField(max_length=25) 
    email = forms.EmailField() 
    to = forms.EmailField() 
    comments = forms.CharField(required=False, widget=forms.Textarea) 

class CommentForm(forms.ModelForm): 
    class Meta: 
     model = Comment 
     fields = ('name', 'email', 'body') 

models.py

from django.db import models 
from django.utils import timezone 
from django.contrib.auth.models import User 
from django.core.urlresolvers import reverse 
from .forms import EmailPostForm, CommentForm 

# Create your models here. 
class PublishedManager(models.Manager): 
    def get_queryset(self): 
     return super(PublishedManager, self).get_queryset().filter(status='published') 



class Post(models.Model): 
    STATUS_CHOICES = (
      ('draft', 'Draft'), 
      ('published', 'Published'), 
      ) 
    title = models.CharField(max_length=250) 
    slug = models.SlugField(max_length=250, unique_for_date="publish") 
    author = models.ForeignKey(User, related_name='blog_posts') 
    body = models.TextField() 
    publish = models.DateTimeField(default=timezone.now) 
    created = models.DateTimeField(auto_now_add=True) 
    updated = models.DateTimeField(auto_now=True) 
    status = models.CharField(max_length=10, choices=STATUS_CHOICES, default="draft") 

    objects = models.Manager() 
    published = PublishedManager() 


    class Meta: 
     ordering = ('-publish',) 

    def __str__(self): 
     return self.title 

    def get_absolute_url(self): 
     return reverse('blog:post_detail', args=[self.publish.year, 
      self.publish.strftime('%m'), 
      self.publish.strftime('%d'), 
      self.slug]) 


class Comment(models.Model): 
    post = models.ForeignKey(Post, related_name='comments') 
    name = models.CharField(max_length=80) 
    email = models.EmailField() 
    body = models.TextField() 
    created = models.DateTimeField(auto_now_add=True) 
    updated = models.DateTimeField(auto_now=True) 
    active = models.BooleanField(default=True) 

    class Meta: 
     ordering = ('created',) 

    def __str__(self): 
     return "Comment by {} on {}".format(self.name, self.post) 

ビューが含まれているプロジェクトで作成したモデルをインポートすることができません.py

from django.shortcuts import render , get_object_or_404 
from blog.models import Post, Comment 
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger 
from django.views.generic import ListView 
from django.core.mail import send_mail 
from blog.forms import CommentForm, EmailPostForm 

class PostListView(ListView): 
    queryset = Post.published.all() 
    context_object_name = 'posts' 
    paginate_by = 3 
    template_name = 'list.html' 


# Create your views here. 


def post_list(request): 
    posts = Post.objects.all() 
    object_list = Post.published.all() 
    paginator = Paginator(object_list,3) 
    page = request.GET.get('page') 
    try: 
     posts = paginator.page('page') 
    except PageNotAnInteger: 
     posts = paginator.page(1) 
    except EmptyPage: 
     posts = paginator.page(paginator.num_pages) 


    return render(request, 'list.html', {'posts': posts, 
             'page':page}) 



def post_detail(request, year, month, day, post): 


    post = get_object_or_404(Post, slug=post, 
            status='published', 
            publish__year=year, 
            publish__month=month, 
            publish__day=day) 
    #list of active comments for this post 
    comments = post.comments.filter(active=True) 

    if request.method == 'POST': 
     # A comment was posted 
     comment_form = CommentForm(data=request.POST) 
     if comment_form.is_valid(): 
      #create comment object but don't save to DB 
      new_comment = comment_form.save(commit=False) 
      # assitgn comment to post 
      new_comment.post = post 
      # save the comment to the DB 
      new_comment.save() 

    else: 
     comment_form =CommentForm() 

    args = {} 
    args.update(csrf(request)) 
    args['post'] = post 
    args['comment_form']= comment_form 
    args['comments'] = comments 



    return render(request, 'detail.html', args) 




def post_share(request,post_id): 
    # retrieve post by id 
    post = get_object_or_404(Post, id=post_id, status='published') 
    sent = False 

    if request.method == 'POST': 
     # form was submitted 
     form = EmailPostForm(request.POST) 
     if form.is_valid(): 
      # Forms fields passed validation# 
      cd = form.cleaned_data 


     post_url = request.build_absolute_uri(post.get_absolute_url()) 
     subject = '{} recommends you read "{}"'.format(cd['name'],post.title) 
     message = 'Read "{}" at {}\n\n{}\'s comments: {}'.format(post.title,post_url,cd['name'],cd['comments']) 

     send_mail(subject,message,'eugenesleator17@gmail.com',[cd['to']]) 




     sent=True 
    else: 

     form = EmailPostForm() 

    return render(request, 'share.html',{'post':post, 
             'form': form, 
             'sent': sent}) 

     return "Comment by {} on {}".format(self.name, self.post) 

トレースバック

(MySiteVirtualEnv) root@kali:~/MySite/MySiteVirtualEnv/mysite# python manage.py makemigrations 
Traceback (most recent call last): 
    File "manage.py", line 10, in <module> 
    execute_from_command_line(sys.argv) 
    File "/root/MySite/MySiteVirtualEnv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 353, in execute_from_command_line 
    utility.execute() 
    File "/root/MySite/MySiteVirtualEnv/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 327, in execute 
    django.setup() 
    File "/root/MySite/MySiteVirtualEnv/local/lib/python2.7/site-packages/django/__init__.py", line 18, in setup 
    apps.populate(settings.INSTALLED_APPS) 
    File "/root/MySite/MySiteVirtualEnv/local/lib/python2.7/site-packages/django/apps/registry.py", line 108, in populate 
    app_config.import_models(all_models) 
    File "/root/MySite/MySiteVirtualEnv/local/lib/python2.7/site-packages/django/apps/config.py", line 202, in import_models 
    self.models_module = import_module(models_module_name) 
    File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module 
    __import__(name) 
    File "/root/MySite/MySiteVirtualEnv/mysite/blog/models.py", line 5, in <module> 
    from .forms import EmailPostForm, CommentForm 
    File "/root/MySite/MySiteVirtualEnv/mysite/blog/forms.py", line 3, in <module> 
    from blog.models import Comment 
ImportError: cannot import name Comment 

Answer 1

あなたは円形（サイ）の輸入をしようとしています。あなたのmodels.pyから次の行を削除します。前のポスト見ていた

from .forms import EmailPostForm, CommentForm