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AttributeError: 'module' object has no attribute 'DatabaseWrapper' #144

ssarangi opened this Issue Jul 10, 2012 · 6 comments


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3 participants

I am getting this error by following the tutorial on http://django-mongodb.org/topics/setup.html.

Could someone help with what might be going wrong.

db/utils.py", line 94, in getitem
conn = backend.DatabaseWrapper(db, alias)
AttributeError: 'module' object has no attribute 'DatabaseWrapper'



jonashaag commented Jul 10, 2012

Which version of Django-nonrel are you using? Also, please show the full traceback.

django-nonrel was the latest git version. I will post the full traceback soon.

Traceback (most recent call last):
  File "manage.py", line 14, in <module>
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 438, in execute_manager
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 379, in execute
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 261, in fetch_command
    klass = load_command_class(app_name, subcommand)
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/core/management/__init__.py", line 67, in load_command_class
    module = import_module('%s.management.commands.%s' % (app_name, name))
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/utils/importlib.py", line 35, in import_module
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/core/management/commands/dbshell.py", line 4, in <module>
    from django.db import connections, DEFAULT_DB_ALIAS
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/db/__init__.py", line 78, in <module>
    connection = connections[DEFAULT_DB_ALIAS]
  File "/home/satyajit/dev/mongo_test/local/lib/python2.7/site-packages/django/db/utils.py", line 94, in __getitem__
    conn = backend.DatabaseWrapper(db, alias)
AttributeError: 'module' object has no attribute 'DatabaseWrapper'

django-nonrel is the latest tip of tree


jonashaag commented Jul 14, 2012

Can you show your settings.py:DATABASES?

kerma commented Dec 14, 2012

I have the same issue

In [1]: import django
In [2]: import torm.settings
In [3]: torm.settings.DATABASES
Out[3]: {'default': {'ENGINE': 'django_mongodb_engine', 'NAME': 'my_database'}}
In [4]: import os
In [5]: os.environ.setdefault("DJANGO_SETTINGS_MODULE", "torm.settings")
Out[5]: 'torm.settings'
In [6]: django.VERSION
Out[6]: (1, 3, 1, 'final', 0)

In [7]: import django_mongodb_engine.base
AttributeError                            Traceback (most recent call last)
<ipython-input-7-6b6eb2c377e0> in <module>()
----> 1 import django_mongodb_engine.base

/Library/Python/2.7/site-packages/django_mongodb_engine-0.4.0-py2.7.egg/django_mongodb_engine/base.pyc in <module>()
  2 import sys
  3 from django.core.exceptions import ImproperlyConfigured
----> 4 from django.db.backends.signals import connection_created
  5 from django.conf import settings

/Library/Python/2.7/site-packages/django/db/__init__.py in <module>()
 76 # we load all these up for backwards compatibility, you should use
 77 # connections['default'] instead.
---> 78 connection = connections[DEFAULT_DB_ALIAS]
 79 backend = load_backend(connection.settings_dict['ENGINE'])

/Library/Python/2.7/site-packages/django/db/utils.py in __getitem__(self, alias)
 92         db = self.databases[alias]
 93         backend = load_backend(db['ENGINE'])
---> 94         conn = backend.DatabaseWrapper(db, alias)
 95         self._connections[alias] = conn
 96         return conn

AttributeError: 'module' object has no attribute 'DatabaseWrapper'

kerma commented Dec 14, 2012

Seems to be related to environment or Python 2.7. After downgrading to 2.6.7 I get the same AttributeError while trying to import django_mongodb_engine.base in python console, however Django runs fine now.

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