code: def key_pair_paths(key_name):
      
      public_key_path = os.path.expanduser("~/.ssh/{}.pub".format(key_name))
      private_key_path = os.path.expanduser("~/.ssh/{}.pem".format(key_name))
      return public_key_path, private_key_path
docs: Returns public and private key paths for a given key_name.