Add docstring to BasicSearchIndex

search_index.py

@@ -7,6 +7,7 @@ from whoosh.qparser import QueryParser, OrGroup
 
 
 class BasicSearchIndex:
+    """Expose relevant functions of Whoosh using a simple interface"""
     def __init__(self, index_dir="index"):
         self.schema = Schema(path=ID(stored=True), page=NUMERIC(stored=True), content=TEXT(stored=True))
         try: