topics API changes

Indexing/api.py

 # import libraries
-from flask import Flask, request, send_file
-from flask_cors import CORS
 import json
-import werkzeug
 import os
+
 import audio_gen as topic_gen
 import bert as bert
+import werkzeug
+from flask import Flask, request, send_file
+from flask_cors import CORS
 from nltk.corpus import stopwords
 
 s = set(stopwords.words('english'))
@@ -14,7 +15,7 @@ CORS(app)
 
 download_file = ''
 
-
+# Topics API
 @app.route('/topic', methods=['GET', 'POST'])
 def topic():
     imagefile = request.files['video']
@@ -26,6 +27,7 @@ def topic():
     download_file = 'upload/' + str(filename).replace('.mp4', '.txt')
 
     text_list_from_video, all_text = topic_gen.split_video_file('upload/' + filename)
+
     # Writing to a file
     file1 = open(download_file, 'w')
     file1.writelines(all_text)