谷歌应用引擎上的 django 路径

Question

我完全不明白这个错误。我使用 django-nonrel，通过 manage.py 将其上传到我的应用程序。 有时我有这个：

<type 'exceptions.AttributeError'>: 'Settings' object has no attribute 'DATABASE_ROUTERS'
Traceback (most recent call last):
File "/base/data/home/apps/appid/3.347077242893060339/execute.py", line 2, in <module>
  from djapp import queue_controller
File "/base/data/home/apps/appid/3.347077242893060339/djapp/queue_controller.py", line 5, in <module>
  from djapp.models import Operation
File "/base/data/home/apps/appid/3.347077242893060339/djapp/models.py", line 3, in <module>
  from django.db import models
File "/base/data/home/apps/appid/3.347077242893060339/django/db/__init__.py", line 66, in <module>
  router = ConnectionRouter(settings.DATABASE_ROUTERS)
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/conf/__init__.py", line 32, in __getattr__
  return getattr(self._target, name)

或

<type 'exceptions.ImportError'>: No module named files.uploadhandler  
Traceback (most recent call last):
File "/base/data/home/apps/appid/3.347067228745038183/djangoappengine/main/main.py", line 28, in <module>
  from django.core.handlers.wsgi import WSGIHandler
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/core/handlers/wsgi.py", line 1, in <module>
  from django.core.handlers.base import BaseHandler
File "/base/python_runtime/python_lib/versions/third_party/django-0.96/django/core/handlers/base.py", line 3, in <module>
  from django import http
File "/base/data/home/apps/appid/3.347067228745038183/django/http/__init__.py", line 28, in <module>
  from django.http.multipartparser import MultiPartParser
File "/base/data/home/apps/appid/3.347067228745038183/django/http/multipartparser.py", line 14, in <module>
  from django.core.files.uploadhandler import StopUpload, SkipFile, StopFutureHandlers

路径有什么问题？为什么会这样？起初路径是“/base/data/home/apps/app-id/3.347046818251769742/django/”，然后是“/base/python_runtime/python_lib/versions/third_party/django-0.96/django/”。
以及如何避免这个错误？

我检查了 sys.path，多次上传新的 django，删除了所有不必要的文件，我迷路了 :(

sys.path = ['/base/data/home/apps/appid/3.347077364008022180', 
'/base/data/home/apps/appid/3.347077364008022180/djangoappengine/lib', 
'/base/python_runtime/python_dist/lib/python25.zip', 
'/base/python_runtime/python_dist/lib/python2.5/', 
'/base/python_runtime/python_dist/lib/python2.5/plat-linux2', 
'/base/python_runtime/python_dist/lib/python2.5/lib-tk',
'/base/python_runtime/python_dist/lib/python2.5/lib-dynload',
'/base/python_runtime/python_lib/versions/1',
'/base/data/home/apps/appid/3.347077364008022180/']

Answer 1

我猜db/__init__.py 做了类似from django.conf import Settings 的事情，并且无论出于何种原因，它有时会被赋予系统版本的 Django 而不是你自己的。

您可以尝试将其更改为使用相对导入，例如from ..conf import Settings，这应该意味着它使用与自身相同的包中的版本。这适用于 Appengine 使用的 Python 2.5。