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-rw-r--r--constructor.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/constructor.py b/constructor.py
index c36f01d..6de5181 100644
--- a/constructor.py
+++ b/constructor.py
@@ -29,7 +29,7 @@ from ruamel.yaml.timestamp import TimeStamp
from ruamel.yaml.util import RegExp
if False: # MYPY
- from typing import Any, Dict, List, Set, Generator, Union # NOQA
+ from typing import Any, Dict, List, Set, Generator, Union, Optional # NOQA
__all__ = ['BaseConstructor', 'SafeConstructor', 'Constructor',
@@ -55,7 +55,7 @@ class BaseConstructor(object):
yaml_multi_constructors = {} # type: Dict[Any, Any]
def __init__(self, preserve_quotes=None, loader=None):
- # type: (Union[None, bool], Any) -> None
+ # type: (Optional[bool], Any) -> None
self.loader = loader
if self.loader is not None and getattr(self.loader, '_constructor', None) is None:
self.loader._constructor = self