title: No module named sql_server.pyodbc.base
body: <p>I wanted to use SQL Server as the backend for Django, but I got this when debugging the web project. 'sql_server.pyodbc' isn't an available database backend. Error was: No module named sql_server.pyodbc.base.</p>
  
  <p>Python Environments (Python 2.7) with Django (1.7), pyodbc(3.0.10), pywin32(218.3). And here is my settings.py:</p>
  
  <pre><code>DATABASES = {
  'default': {
      'ENGINE': 'sql_server.pyodbc',
      'NAME': 'DatabaseName',
      'USER': 'user',
      'PASSWORD': 'pwd',
      'HOST': '127.0.0.1',
      'PORT': '',
      'OPTIONS': {
          'driver': 'SQL Server Native Client 11.0',
          'server': 'ServerName',
          'MARS_Connection': True,
          'dsn': 'MSSQL-PYTHON',
          },
      }
  }
  </code></pre>