code: def fsplit(file_to_split):
      
      dirname = file_to_split + '_splitted'
      if not os.path.exists(dirname):
          os.mkdir(dirname)
      part_file_size = os.path.getsize(file_to_split) / number_of_files + 1
      splitted_files = []
      with open(file_to_split, "r") as f:
          number = 0
          actual = 0
          while 1:
              prec = actual
              # Jump of "size" from the current place in the file
              f.seek(part_file_size, os.SEEK_CUR)
  
              # find the next separator or EOF
              s = f.readline()
              if len(s) == 0:
                  s = f.readline()
              while len(s) != 0 and s != separator:
                  s = f.readline()
  
              # Get the current place
              actual = f.tell()
              new_file = os.path.join(dirname, str(number))
  
              # Create the new file
              with open(file_to_split, "r") as temp:
                  temp.seek(prec)
                  # Get the text we want to put in the new file
                  copy = temp.read(actual - prec)
                  # Write the new file
                  open(new_file, 'w').write(copy)
              splitted_files.append(new_file)
              number += 1
  
              # End of file
              if len(s) == 0:
                  break
      return splitted_files
docs: Split the file and return the list of filenames.