优化ucloud取文件为空时的判断

photo_review/photo_review.py

@@ -38,6 +38,8 @@ def information_extraction(ie, phrecs):
         if pic_path:
             docs.append({"doc": pic_path})
             doc_phrecs.append(phrec)
+    if not docs:
+        return result
     ie_results = ie(docs)
 
     now = get_default_datetime()