code: def parse_options():
      
      parser = argparse.ArgumentParser()
      parser.add_argument('command', help='The YCSB command.')
      parser.add_argument('benchmark', help='The YCSB benchmark.')
      parser.add_argument('-P', '--workload', action='store', dest='workload',
                          default='', help='The path to a YCSB workload file.')
      parser.add_argument('-p', '--parameter', action='append', dest='parameters',
                          default=[], help='The key=value pair of parameter.')
      parser.add_argument('-b', '--num_bucket', action='store', type=int,
                          dest='num_bucket', default=1000,
                          help='The number of buckets in output.')
  
      args = parser.parse_args()
  
      parameters = {}
      parameters['command'] = args.command
      parameters['num_bucket'] = args.num_bucket
  
      for parameter in args.parameters:
          parts = parameter.strip().split('=')
          parameters[parts[0]] = parts[1]
  
      with open(args.workload, 'r') as f:
          for line in f.readlines():
              parts = line.split('=')
              key = parts[0].strip()
              if key in OPERATIONS:
                  parameters[key] = parts[1].strip()
  
      return parameters
docs: Parses options.