python - Custom exception handler not working as documented in django-rest-framework -

i'm trying write custom exception handler in django-rest-framework, , code same given in example:

from rest_framework.views import exception_handler  def custom_exception_handler(exc, context):     # call rest framework's default exception handler first,     # standard error response.     response = exception_handler(exc, context)      # add http status code response.     if response not none:         response.data['status_code'] = response.status_code      return response 

but on raising exception view, not work, instead throws message:

custom_exception_handler() missing 1 required positional argument: 'context'

i've tried setting first argument none, so:

def custom_exception_handler(exc, context=none):

but happens:

exception_handler() takes 1 positional argument 2 given

so seems rest_framework.views.exception_handler takes 1 argument.
indeed case:

def exception_handler(exc):     """     returns response should used given exception.      default handle rest framework `apiexception`, ,     django's built-in `validationerror`, `http404` , `permissiondenied`     exceptions.      unhandled exceptions may return `none`, cause 500 error     raised.     """ 

so question is, bug? or missing something, , there way this?..

edit: has been confirmed officially rest_framework team. has been added in latest version seems using v3.0.2 not reflect new documentation.
https://github.com/tomchristie/django-rest-framework/issues/2737