python - ImportError:无法从 Django Admin Pillow 导入名称 _imaging 访问

Question

我已经为这个错误苦苦挣扎了两天，尝试了堆栈溢出的所有答案，但没有成功。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 pillow。顺便说一下，它在本地环境中运行良好。

[: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 中执行 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，但是没有_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。非常感谢您的帮助。这个错误困扰了我很长时间。

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。我将公共(public)写入权限授予保存图像的“媒体”文件夹，突然它解决了问题。我不确定这是否是一个安全漏洞，但它解决了错误。

我是怎么找到它的:
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 block 正在检查几个条件，最后一行再次引发导入错误。我注释掉了 raise ，宾果游戏显示了权限错误。我不知道为什么在问题是权限时它会显示导入错误。我希望 pillow 的作者能够研究这个问题并尝试生成相关的错误消息，而问题并不是真正的导入错误而是权限错误。