python之Django ImportError 无法导入名称请求

我正在使用 Antonio Mele 的 Django-By-Example 一书学习 Django。现在我已经读到第 5 章了，现在我正在尝试创建图像共享应用程序。但是，尽管遵循了该章中的所有说明，但当我尝试在 Django 开发服务器中添加来自外部 URL 的图像时，我还是遇到了 ImportError。

    ImportError at /images/create/ 
 
cannot import name request 
 
Request URL:    http://127.0.0.1:8000/images/create/?title=%20Django%20and%20Duke&url=http://upload.wikimedia.org/wikipedia/commons/8/85/Django_Reinhardt_and_Duke_Ellington_(Gottlieb).jpg. 
Django Version:     1.8.6 
Exception Location:     /home/ciotar/projects/VirtualEnvs/env/bookmarks/bookmarks/images/forms.py in <module>, line 1 
Python Version:     2.7.11 

我正在使用 Pycharm 并从事件的 virtualenv 实例设置了 python 3.5 解释器。不确定为什么 Django 使用 python 2.7 运行。 我想知道这个问题是否会因为 forms.py 和 views.py 模块之间的“request”名称冲突而出现？

/images/urls.py

urlpatterns = [ 
    url(r'^create/$', views.image_create, name='create'), 
] 

/images/views.py

from django.shortcuts import render, redirect 
from django.contrib.auth.decorators import login_required 
from django.contrib import messages 
from .forms import ImageCreateForm 
 
 
@login_required 
def image_create(request): 
    """ 
    View for creating an Image using the JavaScript Bookmarklet. 
    """ 
    if request.method == 'POST': 
        # form is sent 
        form = ImageCreateForm(data=request.POST) 
        if form.is_valid(): 
            # form data is valid 
            cd = form.cleaned_data 
            new_item = form.save(commit=False) 
            # assign current user to the item 
            new_item.user = request.user 
            new_item.save() 
            messages.success(request, 'Image added successfully') 
            # redirect to new created item detail view 
            return redirect(new_item.get_absolute_url()) 
    else: 
        # build form with data provided by the bookmarklet via GET 
        form = ImageCreateForm(data=request.GET) 
 
    return render(request, 'images/image/create.html', {'section': 'images', 
                                                        'form': form}) 

/images/forms.py

from urllib import request 
from django.core.files.base import ContentFile 
from django.utils.text import slugify 
from django import forms 
from .models import Image 
 
 
class ImageCreateForm(forms.ModelForm): 
 
    class Meta: 
        model = Image 
        fields = ('title', 'url', 'description') 
        widgets = { 
            'url': forms.HiddenInput, 
        } 
 
    def clean_url(self): 
        url = self.cleaned_data['url'] 
        valid_extensions = ['jpg', 'jpeg'] 
        extension = url.rsplit('.', 1)[1].lower() 
        if extension not in valid_extensions: 
            raise forms.ValidationError('The given URL does not match valid image extensions.') 
        return url 
 
    def save(self, force_insert=False, force_update=False, commit=True): 
        image = super(ImageCreateForm, self).save(commit=False) 
        image_url = self.cleaned_data['url'] 
        image_name = '{}.{}'.format(slugify(image.title), 
                                    image_url.rsplit('.', 1)[1].lower()) 
 
        # download image from the given URL 
        response = request.urlopen(image_url) 
        image.image.save(image_name, 
                         ContentFile(response.read()), 
                         save=False) 
 
        if commit: 
            image.save() 
        return image 

请您参考如下方法:

这是由于 Python 版本的差异。

在 Python 2.7 中，您可能需要替换:

from urllib import request 

在你的forms.py中

import urllib2 

同样，urllib2 > Request 模块没有 urlopen 方法。所以你将不得不更换行

response = request.urlopen(image_url) 

与:

response = urllib2.urlopen(image_url) 

在你的forms.py

在这个 SO post 上有一个关于 urllib 和 urllib2 之间的区别的很好的讨论。