def benchmark_command(command, benchmark_script, summarize_script, output_dir, num_iterations, dry_run, upkeep=None, cleanup=None):
 performance_dir = os.path.join(output_dir, 'performance')
 if os.path.exists(performance_dir):
  shutil.rmtree(performance_dir)
 os.makedirs(performance_dir)
 try:
  for i in range(num_iterations):
   out_file = ('performance%s.csv' % i)
   out_file = os.path.join(performance_dir, out_file)
   benchmark_args = [benchmark_script, command, '--output-file', out_file]
   if (not dry_run):
    subprocess.check_call(benchmark_args)
    if (upkeep is not None):
     upkeep()
  if (not dry_run):
   summarize(summarize_script, performance_dir, output_dir)
 finally:
  if ((not dry_run) and (cleanup is not None)):
   cleanup()

def benchmark_command ( command , benchmark_script , summarize_script , output_dir , num_iterations , dry_run , upkeep = None , cleanup = None ) : performance_dir = os . path . join ( output_dir , 'performance' ) if os . path . exists ( performance_dir ) : shutil . rmtree ( performance_dir ) os . makedirs ( performance_dir ) try : for i in range ( num_iterations ) : out_file = ( 'performance%s.csv' % i ) out_file = os . path . join ( performance_dir , out_file ) benchmark_args = [ benchmark_script , command , '--output-file' , out_file ] if ( not dry_run ) : subprocess . check_call ( benchmark_args ) if ( upkeep is not None ) : upkeep ( ) if ( not dry_run ) : summarize ( summarize_script , performance_dir , output_dir ) finally : if ( ( not dry_run ) and ( cleanup is not None ) ) : cleanup ( )
benchmark several runs of a long-running command .