genParticles_cff.py

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import FWCore.ParameterSet.Config as cms
from PhysicsTools.PatAlgos.slimming.prunedGenParticles_cfi import *
from PhysicsTools.PatAlgos.slimming.packedGenParticles_cfi import *
 
prunedGenParticlesWithStatusOne = prunedGenParticles.clone()
prunedGenParticlesWithStatusOne.select.append( "keep    status == 1")
 
prunedGenParticles.src =  cms.InputTag("prunedGenParticlesWithStatusOne")
 
packedGenParticles.inputCollection = cms.InputTag("prunedGenParticlesWithStatusOne")
packedGenParticles.map = cms.InputTag("prunedGenParticles") # map with rekey association from prunedGenParticlesWithStatusOne to prunedGenParticles, used to relink our refs to prunedGen
packedGenParticles.inputOriginal = cms.InputTag("genParticles")
 
genParticlesTask = cms.Task(
    prunedGenParticles,
    packedGenParticles,
    prunedGenParticlesWithStatusOne
)