Fix bad string formatting
@@ -43,8 +43,8 @@ class ParameterStatistics(extension.Extension):
priority = extension.PRIORITY_WRITER
# prefix ends with a '/' and param_name is preceded by a '/'
- report_key_template = '{prefix}{link_name}{param_name}/{attr_name}/ \
- {function_name}'
+ report_key_template = ('{prefix}{link_name}{param_name}/{attr_name}/'
+ '{function_name}')
default_statistics = {
'mean': numpy.mean,
