Docker化Django Admin新增页面报错求助：AttributeError问题

问题描述 #

将虚拟机中正常运行的Django项目迁移至Docker容器，未修改任何Admin模板，但访问/admin/mainapp/divesite/add/时触发内部服务器错误，完整报错日志如下：

报错日志 #

dcdc_django    | Internal Server Error: /admin/mainapp/divesite/add/
dcdc_django    | Traceback (most recent call last):
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/core/handlers/exception.py", line 55, in inner
dcdc_django    |     response = get_response(request)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/core/handlers/base.py", line 220, in _get_response
dcdc_django    |     response = response.render()
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/response.py", line 114, in render
dcdc_django    |     self.content = self.rendered_content
dcdc_django    |                    ^^^^^^^^^^^^^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/response.py", line 92, in rendered_content
dcdc_django    |     return template.render(context, self._request)
dcdc_django    |            ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/backends/django.py", line 107, in render
dcdc_django    |     return self.template.render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 171, in render
dcdc_django    |     return self._render(context)
dcdc_django    |            ~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/test/utils.py", line 114, in instrumented_test_render
dcdc_django    |     return self.nodelist.render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 1008, in render
dcdc_django    |     return SafeString("".join([node.render_annotated(context) for node in self]))
dcdc_django    |                                ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 969, in render_annotated
dcdc_django    |     return self.render(context)
dcdc_django    |            ~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/loader_tags.py", line 159, in render
dcdc_django    |     return compiled_parent._render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/test/utils.py", line 114, in instrumented_test_render
dcdc_django    |     return self.nodelist.render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 1008, in render
dcdc_django    |     return SafeString("".join([node.render_annotated(context) for node in self]))
dcdc_django    |                                ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 969, in render_annotated
dcdc_django    |     return self.render(context)
dcdc_django    |            ~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/loader_tags.py", line 159, in render
dcdc_django    |     return compiled_parent._render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/test/utils.py", line 114, in instrumented_test_render
dcdc_django    |     return self.nodelist.render(context)
dcdc_django    |            ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 1008, in render
dcdc_django    |     return SafeString("".join([node.render_annotated(context) for node in self]))
dcdc_django    |                                ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 969, in render_annotated
dcdc_django    |     return self.render(context)
dcdc_django    |            ~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/loader_tags.py", line 65, in render
dcdc_django    |     result = block.nodelist.render(context)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 1008, in render
dcdc_django    |     return SafeString("".join([node.render_annotated(context) for node in self]))
dcdc_django    |                                ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 969, in render_annotated
dcdc_django    |     return self.render(context)
dcdc_django    |            ~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/loader_tags.py", line 65, in render
dcdc_django    |     result = block.nodelist.render(context)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 1008, in render
dcdc_django    |     return SafeString("".join([node.render_annotated(context) for node in self]))
dcdc_django    |                                ~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/base.py", line 969, in render_annotated
dcdc_django    |     return self.render(context)
dcdc_django    |            ~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/contrib/admin/templatetags/base.py", line 45, in render
dcdc_django    |     return super().render(context)
dcdc_django    |            ~~~~~~~~~~~~~~^^^^^^^^^
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/library.py", line 273, in render
dcdc_django    |     new_context = context.new(_dict)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/context.py", line 275, in new
dcdc_django    |     new_context = super().new(values)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/context.py", line 112, in new
dcdc_django    |     new_context = copy(self)
dcdc_django    |   File "/usr/local/lib/python3.14/copy.py", line 82, in copy
dcdc_django    |     return copier(x)
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/context.py", line 160, in __copy__
dcdc_django    |     duplicate = super().__copy__()
dcdc_django    |   File "/usr/local/lib/python3.14/site-packages/django/template/context.py", line 41, in __copy__
dcdc_django    |     duplicate.dicts = self.dicts[:]
dcdc_django    |     ^^^^^^^^^^^^^^^
dcdc_django    | AttributeError: 'super' object has no attribute 'dicts' and no __dict__ for setting new attributes

问题原因 #

该错误由Python 3.14与当前Django版本不兼容导致：Python 3.14对super()返回的代理对象做了限制，不允许直接设置属性；而旧版Django的模板上下文拷贝逻辑中，尝试给super().__copy__()返回的对象设置dicts属性，触发了AttributeError。

解决方案 #

1. 降级Python版本（推荐） #

修改Dockerfile中的基础镜像，使用Python 3.13及以下版本，示例：

FROM python:3.13-slim

Python 3.13及更早版本无此super()代理对象限制，可直接兼容旧版Django。

2. 升级Django版本 #

升级到支持Python 3.14的Django版本（如Django 5.1及以上，以官方兼容说明为准）。修改requirements.txt：

Django>=5.1

重新构建Docker镜像并安装新版依赖。

3. 临时hack修复（不推荐生产环境） #

若暂时无法升级/降级，可修改Django的template/context.py文件：
找到Context类的__copy__方法，将：

def __copy__(self):
    duplicate = super().__copy__()
    duplicate.dicts = self.dicts[:]
    return duplicate

修改为：

def __copy__(self):
    duplicate = Context()
    duplicate.dicts = self.dicts[:]
    return duplicate

该方案绕过super().__copy__()直接创建Context实例，但属于临时修复，后续升级Django会被覆盖，不建议生产环境使用。

内容的提问来源于stack exchange，提问作者addohm