Update app.py

app.py

@@ -138,8 +138,13 @@ def sort_doc(text,steps_in=0,control=None):
                     print(j)
                     out_js = out_js+control_char[j]
                 
-                sen_obj_out=sen_obj_box[i]    
-                sen_obj_out['sentence']=sen_list[i-3:i+3]  
+                sen_obj_out=sen_obj_box[i]
+
+                aa=3
+                bb=3
+                aa=i if i < 3
+                
+                sen_obj_out['sentence']=sen_list[i-aa:i+bb]  
                 
                 #sen_obj_out=sen_obj[i-3:i+3]    
                 #sen_obj=sen_obj_box[i]