ImportError：无法导入名称_imaging从Django Admin Pillow访问

Question

我一直在努力解决这个错误两天，尝试了堆栈溢出的所有答案，但没有运气。我有一个使用Django图像字段的简单模型

class Author(models.Model):
    first_name = models.CharField(max_length=30)
    last_name = models.CharField(max_length=30)
    email = models.EmailField()
    url = models.URLField(blank=True, null=True)
    short_bio = models.TextField(max_length=200, blank=True, null=True)
    long_bio = models.TextField(max_length=5000, blank=True, null=True)
    role = models.ManyToManyField(AuthorRole)
    facebook_link = models.URLField(blank=True, null=True)
    linkedin_link = models.URLField(blank=True, null=True)
    twitter_link = models.URLField(blank=True, null=True)
    gplus_link = models.URLField(blank=True, null=True)
    thumbnail = models.ImageField(upload_to='images/',     default='images/user_default.jpg')

在生产服务器中，当我从管理员访问模型并选择图像并尝试保存时，它会抛出以下错误。我多次安装和卸载枕头。尝试了不同版本的django和枕头。顺便说一下，它在当地环境中工作正常。

[:error] [pid 20256:tid 139822013380352] [remote 72.48.102.12:60881]
from PIL import Image
[:error] [pid 20256:tid 139822013380352] [remote 72.48.102.12:60881]       File"/home/.virtualenvs/wcsenvpython3/lib/python3.4/sitepackages/PIL/Image.py",    line 67, in <module>
[:error] [pid 20256:tid 139822013380352] [remote 72.48.102.12:60881]
from PIL import _imaging as core
[:error] [pid 20256:tid 139822013380352] [remote 72.48.102.12:60881] ImportError:cannot import name _imaging

我可以从manage.py shell执行from PIL import _imaging。所以看起来pythonpath配置正确。

在我的virtualenv中，我可以看到_imaging.cpython-34m.so文件，但没有 _imaging.py文件。

我的服务器托管在linode中。这是Ubuntu 14.04。我正在使用Apache2。 Python 3.4.3。 Django 1.10枕头3.3.0。你的帮助非常明显。这个错误让我困扰了很久。

1：http://i.stack.imgur.com/nH8O3.jpg 2：http://i.stack.imgur.com/Vpdoe.jpg

Answer 1

好吧，我终于得到了答案。它与枕头无关。我向公众提供了对“媒体”文件夹的写入权限，其中保存了图像并突然解决了问题。我不确定这是否是一个安全漏洞，但它解决了错误。

我是如何找到的：
我决定从PIL更改Image.py文件。

  try:
    # If the _imaging C module is not present, Pillow will not load.
    # Note that other modules should not refer to _imaging directly;
    # import Image and use the Image.core variable instead.
    # Also note that Image.core is not a publicly documented interface,
    # and should be considered private and subject to change.
    from PIL import _imaging as core
    if PILLOW_VERSION != getattr(core, 'PILLOW_VERSION', None):
        raise ImportError("The _imaging extension was built for another "
                          " version of Pillow or PIL")

except ImportError as v:
    core = _imaging_not_installed()
    # Explanations for ways that we know we might have an import error
    if str(v).startswith("Module use of python"):
        # The _imaging C module is present, but not compiled for
        # the right version (windows only).  Print a warning, if
        # possible.
        warnings.warn(
            "The _imaging extension was built for another version "
            "of Python.",
            RuntimeWarning
            )
    elif str(v).startswith("The _imaging extension"):
        warnings.warn(str(v), RuntimeWarning)
    elif "Symbol not found: _PyUnicodeUCS2_" in str(v):
        # should match _PyUnicodeUCS2_FromString and
        # _PyUnicodeUCS2_AsLatin1String
        warnings.warn(
            "The _imaging extension was built for Python with UCS2 support; "
            "recompile Pillow or build Python --without-wide-unicode. ",
            RuntimeWarning
            )
    elif "Symbol not found: _PyUnicodeUCS4_" in str(v):
        # should match _PyUnicodeUCS4_FromString and
        # _PyUnicodeUCS4_AsLatin1String
        warnings.warn(
            "The _imaging extension was built for Python with UCS4 support; "
            "recompile Pillow or build Python --with-wide-unicode. ",
            RuntimeWarning
            )
    # Fail here anyway. Don't let people run with a mostly broken Pillow.
    # see docs/porting.rst
    raise

except块检查几个条件，最后一行再次引发导入错误。我评论了raise，宾果游戏向我展示了许可错误。 我不知道为什么在地球上它显示导入错误，而问题是许可。我希望枕头的编写者能够查看此事并尝试生成相关的错误消息，而问题并非真正导入错误而是权限错误。