value = loader.construct_object(value_node, deep=deep)
if key in mapping:
raise ConstructorError(
- "while constructing a mapping", node.start_mark,
- "found duplicate key (%s)" % key, key_node.start_mark)
+ "while constructing a mapping",
+ node.start_mark,
+ "found duplicate key (%s)" % key,
+ key_node.start_mark,
+ )
mapping[key] = value
return loader.construct_mapping(node, deep)