Big diff: use lower-case list and dict (#5888)

stdlib/urllib/request.pyi

@@ -4,7 +4,7 @@ from _typeshed import StrOrBytesPath
 from email.message import Message
 from http.client import HTTPMessage, HTTPResponse, _HTTPConnectionProtocol
 from http.cookiejar import CookieJar
-from typing import IO, Any, Callable, ClassVar, Dict, List, Mapping, NoReturn, Pattern, Sequence, Tuple, TypeVar, overload
+from typing import IO, Any, Callable, ClassVar, Mapping, NoReturn, Pattern, Sequence, Tuple, TypeVar, overload
 from urllib.error import HTTPError
 from urllib.response import addclosehook, addinfourl
 
@@ -30,9 +30,9 @@ else:
     def url2pathname(pathname: str) -> str: ...
     def pathname2url(pathname: str) -> str: ...
 
-def getproxies() -> Dict[str, str]: ...
-def parse_http_list(s: str) -> List[str]: ...
-def parse_keqv_list(l: List[str]) -> Dict[str, str]: ...
+def getproxies() -> dict[str, str]: ...
+def parse_http_list(s: str) -> list[str]: ...
+def parse_keqv_list(l: list[str]) -> dict[str, str]: ...
 
 if sys.platform == "win32" or sys.platform == "darwin":
     def proxy_bypass(host: str) -> Any: ...  # undocumented
@@ -52,8 +52,8 @@ class Request:
     origin_req_host: str
     selector: str
     data: bytes | None
-    headers: Dict[str, str]
-    unredirected_hdrs: Dict[str, str]
+    headers: dict[str, str]
+    unredirected_hdrs: dict[str, str]
     unverifiable: bool
     method: str | None
     timeout: float | None  # Undocumented, only set after __init__() by OpenerDirector.open()
@@ -61,7 +61,7 @@ class Request:
         self,
         url: str,
         data: bytes | None = ...,
-        headers: Dict[str, str] = ...,
+        headers: dict[str, str] = ...,
         origin_req_host: str | None = ...,
         unverifiable: bool = ...,
         method: str | None = ...,
@@ -77,11 +77,11 @@ class Request:
     def get_header(self, header_name: str) -> str | None: ...
     @overload
     def get_header(self, header_name: str, default: _T) -> str | _T: ...
-    def header_items(self) -> List[Tuple[str, str]]: ...
+    def header_items(self) -> list[Tuple[str, str]]: ...
     def has_proxy(self) -> bool: ...
 
 class OpenerDirector:
-    addheaders: List[Tuple[str, str]]
+    addheaders: list[Tuple[str, str]]
     def add_handler(self, handler: BaseHandler) -> None: ...
     def open(self, fullurl: str | Request, data: bytes | None = ..., timeout: float | None = ...) -> _UrlopenRet: ...
     def error(self, proto: str, *args: Any) -> _UrlopenRet: ...
@@ -119,7 +119,7 @@ class HTTPCookieProcessor(BaseHandler):
     def https_response(self, request: Request, response: HTTPResponse) -> HTTPResponse: ...  # undocumented
 
 class ProxyHandler(BaseHandler):
-    def __init__(self, proxies: Dict[str, str] | None = ...) -> None: ...
+    def __init__(self, proxies: dict[str, str] | None = ...) -> None: ...
     def proxy_open(self, req: Request, proxy: str, type: str) -> _UrlopenRet | None: ...  # undocumented
     # TODO add a method for every (common) proxy protocol
 
@@ -247,7 +247,7 @@ def urlcleanup() -> None: ...
 
 class URLopener:
     version: ClassVar[str]
-    def __init__(self, proxies: Dict[str, str] | None = ..., **x509: str) -> None: ...
+    def __init__(self, proxies: dict[str, str] | None = ..., **x509: str) -> None: ...
     def open(self, fullurl: str, data: bytes | None = ...) -> _UrlopenRet: ...
     def open_unknown(self, fullurl: str, data: bytes | None = ...) -> _UrlopenRet: ...
     def retrieve(