Big diff: Use new "|" union syntax (#5872)

stdlib/xml/sax/__init__.pyi

@@ -1,10 +1,10 @@
 import sys
-from typing import IO, Any, Iterable, List, NoReturn, Optional, Union
+from typing import IO, Any, Iterable, List, NoReturn
 from xml.sax.handler import ContentHandler, ErrorHandler
 from xml.sax.xmlreader import Locator, XMLReader
 
 class SAXException(Exception):
-    def __init__(self, msg: str, exception: Optional[Exception] = ...) -> None: ...
+    def __init__(self, msg: str, exception: Exception | None = ...) -> None: ...
     def getMessage(self) -> str: ...
     def getException(self) -> Exception: ...
     def __getitem__(self, ix: Any) -> NoReturn: ...
@@ -28,6 +28,6 @@ if sys.version_info >= (3, 8):
 else:
     def make_parser(parser_list: List[str] = ...) -> XMLReader: ...
 
-def parse(source: Union[str, IO[str], IO[bytes]], handler: ContentHandler, errorHandler: ErrorHandler = ...) -> None: ...
-def parseString(string: Union[bytes, str], handler: ContentHandler, errorHandler: Optional[ErrorHandler] = ...) -> None: ...
+def parse(source: str | IO[str] | IO[bytes], handler: ContentHandler, errorHandler: ErrorHandler = ...) -> None: ...
+def parseString(string: bytes | str, handler: ContentHandler, errorHandler: ErrorHandler | None = ...) -> None: ...
 def _create_parser(parser_name: str) -> XMLReader: ...

stdlib/xml/sax/saxutils.pyi

@@ -1,7 +1,7 @@
 from _typeshed import SupportsWrite
 from codecs import StreamReaderWriter, StreamWriter
 from io import RawIOBase, TextIOBase
-from typing import Mapping, Optional, Union
+from typing import Mapping
 from xml.sax import handler, xmlreader
 
 def escape(data: str, entities: Mapping[str, str] = ...) -> str: ...
@@ -11,7 +11,7 @@ def quoteattr(data: str, entities: Mapping[str, str] = ...) -> str: ...
 class XMLGenerator(handler.ContentHandler):
     def __init__(
         self,
-        out: Optional[Union[TextIOBase, RawIOBase, StreamWriter, StreamReaderWriter, SupportsWrite[str]]] = ...,
+        out: TextIOBase | RawIOBase | StreamWriter | StreamReaderWriter | SupportsWrite[str] | None = ...,
         encoding: str = ...,
         short_empty_elements: bool = ...,
     ) -> None: ...
@@ -28,7 +28,7 @@ class XMLGenerator(handler.ContentHandler):
     def processingInstruction(self, target, data): ...
 
 class XMLFilterBase(xmlreader.XMLReader):
-    def __init__(self, parent: Optional[xmlreader.XMLReader] = ...) -> None: ...
+    def __init__(self, parent: xmlreader.XMLReader | None = ...) -> None: ...
     def error(self, exception): ...
     def fatalError(self, exception): ...
     def warning(self, exception): ...

stdlib/xml/sax/xmlreader.pyi

@@ -1,4 +1,4 @@
-from typing import Mapping, Optional, Tuple
+from typing import Mapping, Tuple
 
 class XMLReader:
     def __init__(self) -> None: ...
@@ -32,7 +32,7 @@ class Locator:
     def getSystemId(self): ...
 
 class InputSource:
-    def __init__(self, system_id: Optional[str] = ...) -> None: ...
+    def __init__(self, system_id: str | None = ...) -> None: ...
     def setPublicId(self, public_id): ...
     def getPublicId(self): ...
     def setSystemId(self, system_id): ...