python 3.4和Django 1.8.3 PIL导入问题

我有一个Django博客类型的应用程序，里面有文章。我想把图片附在这些文章上。当我尝试这样做时，我得到以下错误和回溯：

Environment:


Request Method: POST
Request URL: http://[site].com/admin/paper/article/1/

Django Version: 1.8.3
Python Version: 3.4.1
Installed Applications:
('sorl.thumbnail',
 'django_mobile',
 'event_ticker',
 'paper',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django_mobile.middleware.MobileDetectionMiddleware',
 'django_mobile.middleware.SetFlavourMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')


Traceback:
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/contrib/admin/options.py" in wrapper
  616.                 return self.admin_site.admin_view(view)(*args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/utils/decorators.py" in _wrapped_view
  110.                     response = view_func(request, *args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/views/decorators/cache.py" in _wrapped_view_func
  57.         response = view_func(request, *args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/contrib/admin/sites.py" in inner
  233.             return view(request, *args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/contrib/admin/options.py" in change_view
  1519.         return self.changeform_view(request, object_id, form_url, extra_context)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/utils/decorators.py" in _wrapper
  34.             return bound_func(*args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/utils/decorators.py" in _wrapped_view
  110.                     response = view_func(request, *args, **kwargs)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/utils/decorators.py" in bound_func
  30.                 return func.__get__(self, type(self))(*args2, **kwargs2)
File "/usr/local/lib/python3.4/contextlib.py" in inner
  30.                 return func(*args, **kwds)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/contrib/admin/options.py" in changeform_view
  1459.             if form.is_valid():
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/forms.py" in is_valid
  184.         return self.is_bound and not self.errors
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/forms.py" in errors
  176.             self.full_clean()
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/forms.py" in full_clean
  392.         self._clean_fields()
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/forms.py" in _clean_fields
  405.                     value = field.clean(value, initial)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/fields.py" in clean
  644.         return super(FileField, self).clean(data)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/fields.py" in clean
  162.         value = self.to_python(value)
File "/home/me/webapps/bs/lib/python3.4/Django-1.8.3-py3.4.egg/django/forms/fields.py" in to_python
  674.         from PIL import Image

Exception Type: ImportError at /admin/paper/article/1/
Exception Value: No module named 'PIL'

我正在运行一个virtualenv，下面是一个

pip冻结的结果

Django==1.8.3
django-mobile==0.5.0
image==1.4.0
pbr==1.1.1
Pillow==2.9.0
Pillow-PIL==0.1.dev0
psycopg2==2.6.1
six==1.9.0
sorl-thumbnail==12.3
stevedore==1.5.0
uWSGI==2.0.11
versiontools==1.9.1
virtualenv==13.0.3
virtualenv-clone==0.2.5
virtualenvwrapper==4.6.0
wheel==0.24.0

我可以提供一百万个其他细节。我没有安装PIL，也无法安装它，因为我使用的virtualenv正在运行python3.4，它甚至无法正确安装PIL，因为它太旧了。当我尝试安装PIL时（使用我从这里的搜索中学到的--allow unverified选项），我得到一个涉及
print
命令的错误

我真的很困惑。我还以为Django把PIL全扔了？但是它作为一个必需的模块出现在Django文件中？我是否需要使用另一个版本的python来安装它，还是我遗漏了一些非常明显的东西？
@chandu我看到了答案。我真的不想直接修改Django文件来让它工作。这似乎是个非常糟糕的主意。另外，这可能是我必须修改的数百条导入语句之一。如果真的没有别的办法，我会这么做，但这真是太让人头疼了…@chandu我看到了答案。我真的不想直接修改Django文件来让它工作。这似乎是个非常糟糕的主意。另外，这可能是我必须修改的数百条导入语句之一。如果真的没有别的办法，我会这么做，但这真是令人头痛。。。