Replace file operations with function

question.py

@@ -160,13 +160,11 @@ def question_update_votes(base_dir: str, nickname: str, domain: str,
                     else:
                         newlines.append(vote_line)
             if save_voters_file:
-                try:
+                text = ''
-                    with open(voters_filename, 'w+',
-                              encoding='utf-8') as fp_voters:
                 for vote_line in newlines:
-                            fp_voters.write(vote_line)
+                    text += vote_line
-                except OSError:
+                save_string(text, voters_filename,
-                    print('EX: unable to write voters file2 ' +
+                            'EX: unable to write voters file2 ' +
                             voters_filename)
             else:
                 return None, None