diff --git a/core/trainer.py b/core/trainer.py
index 4d4bd7f765e814250be3d2b05a42cef290cfdf65..9694d0d04f9f6809e72b02045ddce11e3bbe30c8 100755
--- a/core/trainer.py
+++ b/core/trainer.py
@@ -196,7 +196,7 @@ class Trainer(object):
                 self._status_processor[context['status']](context)
             else:
                 self.other_status_processor(context)
-        except Exception, err:
+        except Exception as err:
             traceback.print_exc()
             print('Catch Exception:%s' % str(err))
             sys.stdout.flush()
diff --git a/core/utils/envs.py b/core/utils/envs.py
index c0004cc0dccd8c582c6229bceb8f3636428971a4..bbb2a824e6d3c5268d6ae17caed99410f714f353 100755
--- a/core/utils/envs.py
+++ b/core/utils/envs.py
@@ -180,7 +180,7 @@ def lazy_instance_by_package(package, class_name):
                                    globals(), locals(), package.split("."))
         instance = getattr(model_package, class_name)
         return instance
-    except Exception, err:
+    except Exception as err:
         traceback.print_exc()
         print('Catch Exception:%s' % str(err))
         return None
@@ -196,7 +196,7 @@ def lazy_instance_by_fliename(abs, class_name):
                                    globals(), locals(), package.split("."))
         instance = getattr(model_package, class_name)
         return instance
-    except Exception, err:
+    except Exception as err:
         traceback.print_exc()
         print('Catch Exception:%s' % str(err))
         return None