ReadxAODConfig.py

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# Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
# Configure the ReadxAOD algorithm
# For guidelines on writing configuration scripts see the following pages:
# https://atlas-software.docs.cern.ch/athena/configuration/
 
# Imports of the configuration machinery
from AthenaConfiguration.ComponentFactory import CompFactory
from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
from AthenaCommon.SystemOfUnits import GeV
 
def ReadxAODCfg(flags):
    '''Method to configure the ReadTriggerDecision algorithm'''
    acc = ComponentAccumulator()
 
    # Track selection tool configuration
    # https://twiki.cern.ch/twiki/bin/view/AtlasProtected/InDetTrackSelectionTool
    # The exact configuration of the tool is set in InDetTrackSelectionTool_Loose_Cfg
    # One could also configure the tool directly here if bespoke settings were needed
    from InDetTrackSelectionTool.InDetTrackSelectionToolConfig import (
        InDetTrackSelectionTool_Loose_Cfg)
    trackSelectionTool = acc.popToolsAndMerge(InDetTrackSelectionTool_Loose_Cfg(flags))
 
    # Configure the algorithm.... note that the tool from above is passed
    # Then add the algorithm to the accumulator
    acc.addEventAlgo(CompFactory.ReadxAOD(name = "ReadxAOD",
                                          PtCut = 1.0*GeV,
                                          TrackSelectionTool = trackSelectionTool,
                                          TrackParticlesKey = "InDetTrackParticles"))
    return acc
 
# Lines to allow the script to be run stand-alone via python
if __name__ == "__main__":
 
    from AthenaConfiguration.MainServicesConfig import MainServicesCfg
    from AthenaConfiguration.AllConfigFlags import initConfigFlags
    import sys
    # Configuration flags
    flags = initConfigFlags()
 
    # Obtain default test files (user can provide their own as well)
    from AthenaConfiguration.TestDefaults import defaultTestFiles
 
    # Set the input file - can also use command line via --files
    flags.Input.Files = defaultTestFiles.AOD_RUN3_MC
    
    # Number of events to process
    flags.Exec.MaxEvents = 1000
    flags.fillFromArgs()
    flags.lock()
    
    # Configure the file reading machinery
    cfg = MainServicesCfg(flags)
    from AthenaPoolCnvSvc.PoolReadConfig import PoolReadCfg
    cfg.merge(PoolReadCfg(flags))
 
    # Run the job
    cfg.merge(ReadxAODCfg(flags))
    sys.exit(cfg.run().isFailure())