Generating Monte Carlo events

• Study how to generating events with Pythia using Python

[seogoni@gate Python_event_gen]$ cmsDriver.py PythiaUESettings_cfi.py -s GEN --eventcontent=FEVTDEBUG --fileout=test_gen.root --scenario=pp --mc --conditions FrontierConditions_GlobalTag,STARTUP_V4::All --dump_python
GEN,ENDJOB
GEN
ENDJOB
Traceback (most recent call last):
  File "/opt/osg-app/cmssoft/cms/slc4_ia32_gcc345/cms/cmssw/CMSSW_2_2_3/bin/slc4_ia32_gcc345/cmsDriver.py", line 13, in ?
    configBuilder.prepare()
  File "/opt/osg-app/cmssoft/cms/slc4_ia32_gcc345/cms/cmssw/CMSSW_2_2_3/python/Configuration/PyReleaseValidation/ConfigBuilder.py", line 628, in prepare
    self.pythonCfgCode += "process.source = "+self.process.source.dumpPython()
AttributeError: 'NoneType' object has no attribute 'dumpPython'
[seogoni@gate Python_event_gen]$

[seogoni@gate Python_event_gen]$ cmsRun GenExample_cfg.py
Internal FlatRandomEGun is initialzed
It is going to generate 1events
found 539 particles
Begin processing the 1st record. Run 1, Event 1, LumiSection 1 at 20-Feb-2009 08:57:11 KST

=============================================

MessageLogger Summary

Severity    # Occurrences   Total Occurrences
--------    -------------   -----------------
[seogoni@gate Python_event_gen]$ ls
GenExample_cfg.py  gen.root  PYTHIA6_ppEleX_10TeV_cff.py  PYTHIA8_custom.py  PythiaUESettings_cfi.py
[seogoni@gate Python_event_gen]$ cmsRun GenExample_cfg.py

• Don't know up to now. this is my homework!!