pyexpat: improve ParserCreate, mark positional-only args (#3676)

Author: hauntsaninja

stdlib/2and3/pyexpat/__init__.pyi

@@ -25,14 +25,14 @@ XML_PARAM_ENTITY_PARSING_ALWAYS: int
 _Model = Tuple[int, int, Optional[str], tuple]
 
 class XMLParserType(object):
-    def Parse(self, data: Union[Text, bytes], isfinal: bool = ...) -> int: ...
-    def ParseFile(self, file: _Reader) -> int: ...
-    def SetBase(self, base: Text) -> None: ...
+    def Parse(self, __data: Union[Text, bytes], __isfinal: bool = ...) -> int: ...
+    def ParseFile(self, __file: _Reader) -> int: ...
+    def SetBase(self, __base: Text) -> None: ...
     def GetBase(self) -> Optional[str]: ...
     def GetInputContext(self) -> Optional[bytes]: ...
-    def ExternalEntityParserCreate(self, context: Optional[Text], encoding: Text = ...) -> XMLParserType: ...
-    def SetParamEntityParsing(self, flag: int) -> int: ...
-    def UseForeignDTD(self, flag: bool = ...) -> None: ...
+    def ExternalEntityParserCreate(self, __context: Optional[Text], __encoding: Text = ...) -> XMLParserType: ...
+    def SetParamEntityParsing(self, __flag: int) -> int: ...
+    def UseForeignDTD(self, __flag: bool = ...) -> None: ...
     buffer_size: int
     buffer_text: bool
     buffer_used: int
@@ -71,5 +71,6 @@ class XMLParserType(object):
     NotStandaloneHandler: Optional[Callable[[], int]]
     ExternalEntityRefHandler: Optional[Callable[[str, Optional[str], Optional[str], Optional[str]], int]]
 
-def ErrorString(errno: int) -> str: ...
-def ParserCreate(encoding: Optional[Text] = ..., namespace_separator: Optional[Text] = ...) -> XMLParserType: ...
+def ErrorString(__code: int) -> str: ...
+# intern is undocumented
+def ParserCreate(encoding: Optional[Text] = ..., namespace_separator: Optional[Text] = ..., intern: Optional[Dict[str, Any]] = ...) -> XMLParserType: ...