Control/xAODDataSource/python/Helpers.py

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# Copyright (C) 2002-2019 CERN for the benefit of the ATLAS collaboration
 
# Necessary import(s).
import ROOT
 
def MakexAODDataFrame( inputs ):
    """Helper function creating a ROOT::RDataFrame object reading xAOD files
 
    The function returns an instance of ROOT::RDataFrame that uses
    xAOD::RDataSource for reading its inputs.
 
    Keyword arguments:
      inputs -- A single string, or a list of string selecting the input file(s)
                Note that the string(s) may contain wildcards and environment
                variables as well.
    """
 
    # Make sure that the dictionary is loaded.
    ROOT.xAOD.ROOT6_xAODDataSource_WorkAround_Dummy()
 
    # Use the C++ function for the heavy lifting.
    return ROOT.xAOD.MakeDataFrame( inputs )