MakeCsvDataFrame is failed to pythonize?

ROOT
,
1

Hi all,

My code:

import ROOT

df = ROOT.RDF.MakeCsvDataFrame("myfile.csv")

Outputs:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/ROOT/_facade.py", line 294, in RDF
    ns.Experimental = _create_rdf_experimental_distributed_module(ns)
  File "/usr/lib64/python3.6/site-packages/ROOT/_facade.py", line 61, in _create_rdf_experimental_distributed_module
    import DistRDF
  File "/usr/lib64/python3.6/site-packages/ROOT/_facade.py", line 150, in _importhook
    return _orig_ihook(name, *args, **kwds)
ModuleNotFoundError: No module named 'DistRDF'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "myPlotter.py", line 6, in <module>
    df = ROOT.RDF.MakeCsvDataFrame("../output/Lotse1/Lotse0_record.csv")
  File "/usr/lib64/python3.6/site-packages/ROOT/_facade.py", line 296, in RDF
    raise Exception('Failed to pythonize the namespace RDF')
Exception: Failed to pythonize the namespace RDF

Am I doing something wrong?

python: 3.6.8
ROOT: 6.24/06

2

nvm, updating to ROOT Version: 6.26/08 fixes the problem

3

Hi @FoxWise ,

I just tried to run those commands with v6.24.06 installed via conda and things work fine, so the problem seems to be with your environment/installation: it’s missing the DistRDF part. @vpadulan any idea how this could happen?

@FoxWise how did you install ROOT?

Cheers,
Enrico

EDIT: ah, just saw the last message. It makes sense that reinstalling ROOT helped :slight_smile:

4

Hi!

Indeed it should not happen with v6.24/06 (or any consecutive version). One possible cause may be a build from source that went bad, somehow the DistRDF module was removed after the build maybe? Building with pyroot and dataframe will always also install the distributed module.

Best,
Vincenzo

5

That was an installation via
sudo yum install root at some point in CentOS 8.
I fixed with sudo yum update root. So indeed, maybe something went bad with an installation…

Cheers