feat: 优化get_abstract_from_elsevier2

apps/resm/tasks.py

@@ -78,12 +78,8 @@ def get_abstract_from_elsevier(publication_year: int = None, number_of_task:int
         "httpAccept": "text/xml"
     }
     err_msg = ""
-    if number_of_task is None:
-        papers = qs.all()
-    else:
-        papers = qs[:number_of_task]
     with requests.Session() as req:
-        for paper in papers:
+        for paper in qs[:number_of_task]:
             try:
                 res = req.get(
                     f"https://api.elsevier.com/content/article/doi/{paper.doi}",