Update ppt_chunker.py

ppt_chunker.py

@@ -119,12 +119,12 @@ def ppt_chunk(file_like, nlp):
     print(f'TIME INTERMEDIATE {fr}')
         
     weakDict = OrderedMultiIndexMapWeakRef()
-    metadata_main_title = None
-    metadata_sub_title = None
+    metadata_main_title = ''
 
     for chunk in chunks:
         nb_titles = 0
         nb_sub_titles = 0
+        metadata_sub_title = ''
         
         for i, sub_chunk in enumerate(chunk[1]):
             if type(sub_chunk) is list:
@@ -142,7 +142,7 @@ def ppt_chunk(file_like, nlp):
                     break
                 
             if i == len(chunk) - 1:
-                weakDict.insert(chunk[0], "\n".join([c[1] for c in chunk[1]]))
+                weakDict.insert(chunk[0], "\n".join([c[1] for c in chunk[1]]), metadata_main_title, metadata_sub_title)
                     
     et = time.time()
     ft = et - s