Django-piston make piston return full traceback of exception

How to make piston return full traceback of exception. By default it returns me only last error text. Like

id() takes exactly one argument (0 given)

Need to know which file and which line...

Solution

Piston loads a http status response via utils.rc, no errors are raised.

from the documentation:

Configuration variables
Piston is configurable in a couple of ways, which allows more granular 
control of some areas without editing the code.

Setting                         Meaning
settings.PISTON_EMAIL_ERRORS    If (when) Piston crashes, it will email the 
                                administrators a backtrace (like the Django one
                                you see during DEBUG = True)
settings.PISTON_DISPLAY_ERRORS  Upon crashing, will display a small backtrace 
                                to the client, including the method signature 
                                expected.
settings.PISTON_STREAM_OUTPUT   When enabled, Piston will instruct Django to 
                                stream the output to the client, but please read
                                streaming before enabling it.

I'd recommend to setup a logger, sentry together with raven is rather convenient and you get to configure your own log level and handler.