text: import os, sys
  
  if len(sys.argv) < 2:
      print('Usage: prepare.py <prefix> <new>')
      exit()
  
  prefix = sys.argv[1]
  new = sys.argv[2]
  files = os.listdir()
  
  for f in files:
    if f.startswith(prefix):
      name = f.replace(prefix,new)
      try:
        os.rename(f, name)
      except Exception:
        print('Failed to rename file: ' + f + ' to ' + name)
  