text: #!/usr/bin/python3
  
  import re
  import os
  import sys
  
  if __name__ == '__main__':
      src_path = sys.argv[1]
      dest_path = sys.argv[2]
  
      if os.path.isfile(src_path):
          with open(src_path, 'r') as f_in, open(dest_path, 'w') as f_out:
              for line in f_in:
                  s = re.sub(r'[^a-zA-Z0-9\s]', ' ', line)
                  f_out.write(s)
  