B2A903-PrintOutVariableValues.py

#!/usr/bin/env python3
 
 
 
 
 
import basf2 as b2
import modularAnalysis as ma
 
# create path
my_path = b2.create_path()
 
# load input ROOT file
ma.inputMdst(environmentType='default',
             filename=b2.find_file('B2pi0D_D2hh_D2hhh_B2munu.root', 'examples', False),
             path=my_path)
 
# create charged kaon and pion particle lists with names "K-:gen" and "pi-:gen"
# all generated kaons(pions) will be added to the kaon(pion) list
ma.fillParticleListFromMC(decayString='K-:gen', cut='', path=my_path)
ma.fillParticleListFromMC(decayString='pi-:gen', cut='', path=my_path)
 
# print charge, energy and total momentum of generated kaons
# and x,y,z components of momenta for generated pions
#
# the list of all available variables can be obtained by executing
# basf2 analysis/scripts/variables/print_variables.py
ma.printVariableValues(list_name='K-:gen', var_names=['charge', 'E', 'p'], path=my_path)
ma.printVariableValues(list_name='pi-:gen', var_names=['charge', 'px', 'py', 'pz'], path=my_path)
 
# Process the events
b2.process(my_path)
 
# print out the summary
print(b2.statistics)