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#!/usr/bin/python
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import sys
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import os
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import os.path
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import shutil
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import hadd
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if len(sys.argv) != 2:
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print 'Usage: ', sys.argv[0], ' subfolder'
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sys.exit()
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subfolder = sys.argv[1]
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if subfolder.endswith('/'):
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subfolder = subfolder[:-1]
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prefix = '/scratch/'+os.getenv('USER')+'/'
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inpath = prefix+subfolder+'/'
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assert os.path.exists(inpath)
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print 'Found input path: ', inpath
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outpath = 'output/' #+subfolder+'/'
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#assert not os.path.exists(outpath)
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outfile = outpath+subfolder+'.root'
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assert not os.path.exists(outfile)
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print 'Output path: ', outpath
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print 'Output file: ', outfile
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# merge all files
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merged = inpath+subfolder+'_merged.root'
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assert not os.path.exists(merged)
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files = [inpath + s for s in os.listdir(inpath)]
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print '---------------- start hadd ----------------'
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hadd.hadd(merged, files)
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print '---------------- hadd done ----------------'
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print 'Created merged file: ', merged
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# copy merged file
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shutil.copy(merged, outfile)
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print 'Copied merged file: ', outfile
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print 'Done. The data hasn\'t been deleted on scratch...'
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print ' To do that run: rm -r ', inpath
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