pyroot_tfile.py

#!/usr/bin/env python3
 

 
# This test catches a regression in PyRoot (in root 5.34/19+?, fixed in 5.34/23)
from basf2 import find_file
import ROOT
 
path = find_file('framework/tests/chaintest_2.root')
 
with ROOT.TFile(path) as f:
    tree = f.Get('tree')
    hits = ROOT.TClonesArray('Belle2::PXDSimHit')
    tree.SetBranchAddress('PXDSimHits', hits)
    tree.GetEntry(0)
    assert (hits.GetEntriesFast() > 0)
    hit = hits[0]
    hit.Dump()