Simulation.py

#!/usr/bin/env python3
 
 
 
# Reconstruction of generated ee->mumu(ISR) events.
 
import glob
import os
import sys
import basf2
from simulation import add_simulation
from reconstruction import add_reconstruction, add_cdst_output
 
# Set the global log level
basf2.set_log_level(basf2.LogLevel.INFO)
 
input = basf2.register_module('RootInput')
input.param('inputFileName', sys.argv[1])
 
# Create the main path and add the modules
main = basf2.create_path()
main.add_module(input)
 
background_files = None
if 'BELLE2_BACKGROUND_DIR' in os.environ:
    background_directory = os.environ['BELLE2_BACKGROUND_DIR']
    background_files = glob.glob(background_directory + '/*.root')
else:
    basf2.B2WARNING('The variable BELLE2_BACKGROUND_DIR is not set. '
                    'Beam background is not used in the simulation')
add_simulation(main, bkgfiles=background_files)
 
add_reconstruction(main, reconstruct_cdst='rawFormat')
add_cdst_output(main, filename=sys.argv[2])
main.add_module('Progress')
 
# generate events
basf2.process(main)
 
# show call statistics
print(basf2.statistics)