Problem with jupyter notebook and python 3

[645978336]

Hello, I am a new ROOT user
and I have some question
I install ROOT 6 use python 3

cmake -Droofit=ON -Dfftw3=ON -Dpython3=ON -DPYTHON_EXECUTABLE=/usr/bin/python3 -DPYTHON_INCLUDE_DIR=/usr/include/python3.5m -DPYTHON_LIBRARY=/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0 ../root  

and I can import ROOT and use ROOT in the terminal

and it works

But everything changes in the jupyter notebook

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-1-ee8dc4376aa8> in <module>()
----> 1 import ROOT

~/Ben_root_build/lib/ROOT.py in <module>()
    614    ip = get_ipython()
    615    if hasattr(ip,"kernel"):
--> 616       import JupyROOT
    617       import JsMVA
    618 

~/Ben_root_build/lib/ROOT.py in _importhook(name, *args, **kwds)
    316       except Exception:
    317          pass
--> 318    return _orig_ihook( name, *args, **kwds )
    319 
    320 __builtin__.__import__ = _importhook

~/Ben_root_build/lib/JupyROOT/__init__.py in <module>()
      3 if '__IPYTHON__' in __builtins__ and __IPYTHON__:
      4     cppcompleter.load_ipython_extension(get_ipython())
----> 5     utils.iPythonize()

~/Ben_root_build/lib/JupyROOT/utils.py in iPythonize()
    500 def iPythonize():
    501     setStyle()
--> 502     loadMagicsAndCapturers()
    503     declareProcessLineWrapper()
    504     #enableCppHighlighting()

~/Ben_root_build/lib/JupyROOT/utils.py in loadMagicsAndCapturers()
    473     for extName in extNames:
    474         extMgr.load_extension(extName)
--> 475     captures.append(StreamCapture())
    476     captures.append(CaptureDrawnPrimitives())
    477 

~/Ben_root_build/lib/JupyROOT/utils.py in __init__(self, ip)
    241         self.errString = ""
    242 
--> 243         self.asyncCapturer = handlers.Runner(self.syncCapture)
    244 
    245         self.isFirstPreExecute = True

~/Ben_root_build/lib/JupyROOT/handlers.py in __init__(self, function)
     97         self.function = function
     98         if platform != 'darwin':
---> 99             setrlimit(RLIMIT_STACK,(RLIM_INFINITY,RLIM_INFINITY))
    100         self.thread = None
    101 

ValueError: current limit exceeds maximum limit

I have no idea about how to deal with it?
Can you help me?

[bellenot]

Maybe @Danilo or @etejedor could help you

[ksmith]

I just posted about this same error last week (python 2 though):

Jupyter Module Load ValueError

Hi, If I create anew Python 2 notebook in Juypter and simply try to load the ROOT module (python 2 bindings built for ROOT 6.10.04) I get the following error (these do not appear when using python or ipython from the terminal): import ROOT --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-1-b332e25ada1f> in <module>() ----> 1 import ROOT /opt/root/6.10.04/lib/ROOT.pyc in <modu…

[etejedor]

Hello,

I’ve just pushed a fix to ROOT master and 6.10 patches:

https://root.cern.ch/gitweb/?p=root.git;a=commitdiff;h=67ba4b061ef51a9fe0a36c11483b1b9f86ff871c

In short, we are not setting the maximum stack size anymore since it demonstrated to be problematic.

Please let us know if this solves your issue.

Cheers,

Enric

[645978336]

Thanks, etejedor

Amazing!!!
It works!!!(I use ROOT 6.11/01)
Both Python3 and ROOT C++ work!!

BTW, I use ROOT in the Bash on Windows and Xming.

[ksmith]

@645978336

BTW, I use ROOT in the Bash on Windows and Xming.

This is the exact same environment as used in my issue. This fix resolved the issue with python 2 as well.