change tuple assignment

handler.py

@@ -386,7 +386,11 @@ def run_math_density(transcript, uptake_speaker=None):
             matches = [match for match in matches if not any(match.start() in range(existing[0], existing[1]) for existing in matched_positions)]
             if len(matches) > 0:
                 if math_terms_dict[term] not in math_word_cloud:
-                    math_word_cloud[math_terms_dict[term]] = (0, 'teacher' if utt.speaker == uptake_speaker else 'student')
+                    math_word_cloud[math_terms_dict[term]] = (0, None)
+                    if utt.speaker == uptake_speaker:
+                        math_word_cloud[math_terms_dict[term]][1] = 'teacher'
+                    else:
+                        math_word_cloud[math_terms_dict[term]][1] = 'student'
                 math_word_cloud[math_terms_dict[term]][0] += len(matches)
                 match_list.append(math_terms_dict[term])
             # Update matched positions