update zol attribute no relationship deal

ZOL_Crawler.py

@@ -37,9 +37,14 @@ class CRAWLER:
         获取ZOL参数对应关系
         '''
         try:
+            zol_rel_data = pd.DataFrame()
             cursor = self.conn.cursor()
             cursor.execute("SELECT * FROM Product_Relation_Attribute_SubTitle where ZI_SubCategoryCode = '"+zgc_category_code+"' and Source = 'ZOL'")
-            data_source = [v for v in cursor.fetchall()]
+            try:
+                data_source = [v for v in cursor.fetchall()]
+            except:
+                print(str(zgc_category_code) + " 该类别产品参数项无zol对应关系")
+                return zol_rel_data
             zol_rel_data = pd.DataFrame(data_source,columns=[tuple[0] for tuple in cursor.description])
             
             cursor.close()