add paper

Document_QA.py

@@ -10,8 +10,8 @@ from PyPDF2 import PdfReader
 
 class Paper(object):
 
-    def __init__(self, pdf_path) -> None:
-        self._pdf_obj = PdfReader(pdf_path)
+    def __init__(self, pdf_obj: PdfReader) -> None:
+        self._pdf_obj = pdf_obj
         self._paper_meta = self._pdf_obj.metadata
         self.texts = []