Invalid python

Custom_EasyBlocks/cpmd.py

@@ -139,7 +139,7 @@ class EB_CPMD(ConfigureMake):
                 (r"^(\s*FC=.*)", r"#\1"),
                 (r"^(\s*LD)=.*", r"\1='$(FC)'"),
             ])
-        except IOError, err:
+        except IOError as err:
             raise EasyBuildError("Failed to patch %s: %s", selected_base_config, err)
 
         if self.cfg['configure_cmd_prefix']: