Django: 'unicode' object has no attribute 'tzinfo'. Production server only

问题

I'm stumped. With my local set up (python manage.py runserver) everything runs fine. With my production set up (wsgiserver.CherryPyWSGIServer), I get 'unicode' object has no attribute 'tzinfo' when my program tries to convert datetime2(7) from the database to local time in the pytz module. Using Django 1.9.

• Both set ups use django-pyodbc-azure to connect to the same mssql database. In fact to troubleshoot this, both use the same settings files.

  # settings.py
  ...
  
  DATABASES = {
      'default': {
          'ENGINE': 'sql_server.pyodbc',
          'NAME': 'dbname',
          'OPTIONS': {
              'use_mars': True,
              'use_legacy_datetime': True,
              'driver': 'SQL Server Native Client 11.0'
          }
      }
  }
  
  ...
  
  # Relevant to runserver command:
  WSGI_APPLICATION = 'wsgi.application'
  

• Production is run by running this file:

  # deploy_server.py
  
  from . import wsgi
  sn = socket.gethostname()
  
  server = wsgiserver.CherryPyWSGIServer(
      ('0.0.0.0', 8009), wsgi.application, server_name=sn,
  )
  server.start()
  

• Local is run with Djangos runserver command

• wsgi.py:

  os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings")
  
  from django.core.wsgi import get_wsgi_application
  application = get_wsgi_application()
  

I initially had the same problem locally, but configuring the database with the options shown fixed that.

Any help would be awesome.

来源：https://stackoverflow.com/questions/35758154/django-unicode-object-has-no-attribute-tzinfo-production-server-only