PyROOT + CopyTree() segfaults

ROOT
1

I am using PyROOT, and trying to run CopyTree(), however I receive a segmentation violation when I run the following code:

from ROOT import TFile, TTree, TChain

c = TChain()

c.AddFile('myfile.root')

t = c.CopyTree('something > 0')

If I do the same thing using the ROOT interpreter it works fine and without errors. I’ve tried this in both ROOT v4 and v5, so I think that perhaps I am missing a step that needs to be done in PyROOT?

Thank you.

2

Hi,

as I’m unable to reproduce any differences between rint and python, could you please post the traceback of the segfault and see whether I can guess what is going on?

Thanks,
Wim

3

I am sorry, the error was on my part. Please ignore the original post.