void testMemLeak(TString fileList)
		 
{
  
  TChain* chain = new TChain("cbmsim");
  
  //use python do parse filelist 
  TPython::LoadMacro("macro/tpc/FOPI/parseFiles.py");
  PyFileParser fp;
  fp.setFiles(fileList.Data());
  int nFiles = (int)fp.getNum();
  for(int i=0; i<nFiles; i++) {
    chain->Add((char*)fp.getFile(i));
  }
  unsigned int nE = chain->GetEntries();
  std::cout<<"Chain has "<<nE<<" entries."<<std::endl;
 
  for(unsigned int e=0; e<nE; e++) {
    chain->GetEntry(e);
    if(e%1000 == 0) {
      std::cout<<". ";
      std::cout.flush();
    }
  }
  

}