faulthandler.enable() fails with IOError

[poldrack]

@fperez: This works in ipython shell (py3.5.1, ipython 4.0.1):

In [1]: import faulthandler

In [2]: faulthandler.enable()

but fails under jupyter:

In [2]:

import faulthandler
​
In [3]:

faulthandler.enable()

UnsupportedOperation Traceback (most recent call last)
in ()
----> 1 faulthandler.enable()

/Users/poldrack/anaconda/envs/py3k/lib/python3.5/site-packages/ipykernel/iostream.py in fileno(self)
203
204 def fileno(self):
--> 205 raise UnsupportedOperation("IOStream has no fileno.")
206
207 def write(self, string):

UnsupportedOperation: IOStream has no fileno.

[fperez]

Yup, I'm not 100% sure right now what the issue is, but the problem is a layer down, in the kernel itself. It manifests itself in the notebook for you, but it can be seen at the terminal if you connect to a 'raw' kernel from a console. I just moved the bug over to the kernel package where we'll ultimately have to fix the actual problem, will close this one here and we can continue tracking the problem over there...

Thanks for reporting it, and sorry about this!!