Update main_test_table1.py

Author: cszn

main_test_table1.py

@@ -18,7 +18,8 @@
 from utils import utils_logger
 from utils import utils_sisr as sr
 from utils import utils_image as util
-from models.network_usrnet import USRNet as net
+from models.network_usrnet import USRNet as net   # for pytorch version <= 1.7.1
+# from models.network_usrnet_v1 import USRNet as net  # for pytorch version >= 1.8.1
 
 
 '''