找不到导致 RemovedInDjango110Warning 的原因

Question

我在日志中发现了这个，在将 python 从 2.7 升级到 3.5 后，没有完整的堆栈跟踪，我不知道如何解决这个问题。

/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/loader.py:97: RemovedInDjango110Warning: render() must be called with a dict, not a RequestContext.
  return template.render(context, request)

2018-02-24 21:53:07,452 - WARNING - django - /root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/loader.py:97: RemovedInDjango110Warning: render() must be called with a dict, not a RequestContext.
  return template.render(context, request)

我做了grep -rl --include \*.py 'Context('，没有显示任何内容，不仅限于 python 文件，它会给我一堆 JavaScript 文件（React）。

Django==1.9.3

---

升级到 Django==1.10 会给我带来更多我不知道如何修复的错误。

Internal Server Error: /exercises/
Traceback (most recent call last):
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 313, in decode
    value = int(value)
ValueError: invalid literal for int() with base 10: b'\x80\x04\x95\x16\x01\x00\x00\x00\x00\x00\x00\x8c\x15django.db.models.base\x94\x8c\x0emodel_unpickle\x94\x93\x94\x8c\x0eadministration\x94\x8c\x15SiteWideConfiguration\x94\x86\x94]\x94h\x00\x8c\x14si

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/exception.py", line 39, in inner
    response = get_response(request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
    response = self._get_response(request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 217, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/channels/handler.py", line 194, in process_exception_by_middleware
    return super(AsgiHandler, self).process_exception_by_middleware(exception, request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 215, in _get_response
    response = response.render()
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/response.py", line 109, in render
    self.content = self.rendered_content
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/response.py", line 86, in rendered_content
    content = template.render(context, self._request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/backends/django.py", line 66, in render
    return self.template.render(context)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/base.py", line 206, in render
    with context.bind_template(self):
  File "/usr/lib/python3.5/contextlib.py", line 59, in __enter__
    return next(self.gen)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/debug_toolbar/panels/templates/panel.py", line 50, in _request_context_bind_template
    context = processor(self.request)
  File "/home/miranda/workspace/CodeBench/common/context_processors.py", line 8, in settings_processor
    sw_cfg = SiteWideConfiguration.get_solo()
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/solo/models.py", line 47, in get_solo
    obj = cache.get(cache_key)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/cache.py", line 33, in _decorator
    return method(self, *args, **kwargs)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/cache.py", line 82, in get
    client=client)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 208, in get
    return self.decode(value)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 320, in decode
    value = self._serializer.loads(value)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/serializers/pickle.py", line 36, in loads
    return pickle.loads(force_bytes(value))
AttributeError: Can't get attribute 'simple_class_factory' on <module 'django.db.models.base' from '/root/.virtualenvs/python3/lib/python3.5/site-packages/django/db/models/base.py'>
2018-02-25 13:04:04,715 - ERROR - exception - Internal Server Error: /exercises/
Traceback (most recent call last):
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 313, in decode
    value = int(value)
ValueError: invalid literal for int() with base 10: b'\x80\x04\x95\x16\x01\x00\x00\x00\x00\x00\x00\x8c\x15django.db.models.base\x94\x8c\x0emodel_unpickle\x94\x93\x94\x8c\x0eadministration\x94\x8c\x15SiteWideConfiguration\x94\x86\x94]\x94h\x00\x8c\x14si

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/exception.py", line 39, in inner
    response = get_response(request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
    response = self._get_response(request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 217, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/channels/handler.py", line 194, in process_exception_by_middleware
    return super(AsgiHandler, self).process_exception_by_middleware(exception, request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/core/handlers/base.py", line 215, in _get_response
    response = response.render()
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/response.py", line 109, in render
    self.content = self.rendered_content
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/response.py", line 86, in rendered_content
    content = template.render(context, self._request)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/backends/django.py", line 66, in render
    return self.template.render(context)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django/template/base.py", line 206, in render
    with context.bind_template(self):
  File "/usr/lib/python3.5/contextlib.py", line 59, in __enter__
    return next(self.gen)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/debug_toolbar/panels/templates/panel.py", line 50, in _request_context_bind_template
    context = processor(self.request)
  File "/home/miranda/workspace/CodeBench/common/context_processors.py", line 8, in settings_processor
    sw_cfg = SiteWideConfiguration.get_solo()
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/solo/models.py", line 47, in get_solo
    obj = cache.get(cache_key)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/cache.py", line 33, in _decorator
    return method(self, *args, **kwargs)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/cache.py", line 82, in get
    client=client)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 208, in get
    return self.decode(value)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/client/default.py", line 320, in decode
    value = self._serializer.loads(value)
  File "/root/.virtualenvs/python3/lib/python3.5/site-packages/django_redis/serializers/pickle.py", line 36, in loads
    return pickle.loads(force_bytes(value))
AttributeError: Can't get attribute 'simple_class_factory' on <module 'django.db.models.base' from '/root/.virtualenvs/python3/lib/python3.5/site-packages/django/db/models/base.py'>

我安装了以下内容：

asgi-redis==0.8.3
django-redis==4.8.0
django-solo==1.1.2

Answer 1

在 Django 1.10 发行说明中有

“由 get_template() 和 select_template() 返回的 Django 模板对象在它们的 render() 方法中不再接受 Context。”

这可能会导致警告。 1.10 的发行说明在这里：https://docs.djangoproject.com/en/2.0/releases/1.10/

另外，如果您还不知道 1.9 不再是受支持的 Django 版本