switch to lower-case "# undocumented" comments (#5871)

stdlib/@python2/SocketServer.pyi

@@ -99,16 +99,16 @@ class BaseRequestHandler:
     def finish(self) -> None: ...
 
 class StreamRequestHandler(BaseRequestHandler):
-    rbufsize: ClassVar[int]  # Undocumented
-    wbufsize: ClassVar[int]  # Undocumented
-    timeout: ClassVar[Optional[float]]  # Undocumented
-    disable_nagle_algorithm: ClassVar[bool]  # Undocumented
-    connection: SocketType  # Undocumented
+    rbufsize: ClassVar[int]  # undocumented
+    wbufsize: ClassVar[int]  # undocumented
+    timeout: ClassVar[Optional[float]]  # undocumented
+    disable_nagle_algorithm: ClassVar[bool]  # undocumented
+    connection: SocketType  # undocumented
     rfile: BinaryIO
     wfile: BinaryIO
 
 class DatagramRequestHandler(BaseRequestHandler):
-    packet: SocketType  # Undocumented
-    socket: SocketType  # Undocumented
+    packet: SocketType  # undocumented
+    socket: SocketType  # undocumented
     rfile: BinaryIO
     wfile: BinaryIO

stdlib/@python2/asyncore.pyi

@@ -6,7 +6,7 @@ from typing import Any, Dict, Optional, Tuple, Union, overload
 # cyclic dependence with asynchat
 _maptype = Dict[int, Any]
 
-socket_map: _maptype = ...  # Undocumented
+socket_map: _maptype = ...  # undocumented
 
 class ExitNow(Exception): ...
 

stdlib/@python2/urllib.pyi

@@ -127,7 +127,7 @@ def quote(s: AnyStr, safe: Text = ...) -> AnyStr: ...
 def quote_plus(s: AnyStr, safe: Text = ...) -> AnyStr: ...
 def urlencode(query: Union[Sequence[Tuple[Any, Any]], Mapping[Any, Any]], doseq=...) -> str: ...
 def getproxies() -> Mapping[str, str]: ...
-def proxy_bypass(host: str) -> Any: ...  # Undocumented
+def proxy_bypass(host: str) -> Any: ...  # undocumented
 
 # Names in __all__ with no definition:
 #   basejoin

stdlib/asyncore.pyi

@@ -7,7 +7,7 @@ from typing import Any, Dict, Optional, Tuple, Union, overload
 _maptype = Dict[int, Any]
 _socket = socket
 
-socket_map: _maptype = ...  # Undocumented
+socket_map: _maptype = ...  # undocumented
 
 class ExitNow(Exception): ...
 

stdlib/configparser.pyi

@@ -50,16 +50,16 @@ class LegacyInterpolation(Interpolation):
     def before_get(self, parser: _parser, section: str, option: str, value: str, vars: _section) -> str: ...
 
 class RawConfigParser(_parser):
-    _SECT_TMPL: ClassVar[str] = ...  # Undocumented
-    _OPT_TMPL: ClassVar[str] = ...  # Undocumented
-    _OPT_NV_TMPL: ClassVar[str] = ...  # Undocumented
+    _SECT_TMPL: ClassVar[str] = ...  # undocumented
+    _OPT_TMPL: ClassVar[str] = ...  # undocumented
+    _OPT_NV_TMPL: ClassVar[str] = ...  # undocumented
 
     SECTCRE: Pattern[str] = ...
     OPTCRE: ClassVar[Pattern[str]] = ...
-    OPTCRE_NV: ClassVar[Pattern[str]] = ...  # Undocumented
-    NONSPACECRE: ClassVar[Pattern[str]] = ...  # Undocumented
+    OPTCRE_NV: ClassVar[Pattern[str]] = ...  # undocumented
+    NONSPACECRE: ClassVar[Pattern[str]] = ...  # undocumented
 
-    BOOLEAN_STATES: ClassVar[Mapping[str, bool]] = ...  # Undocumented
+    BOOLEAN_STATES: ClassVar[Mapping[str, bool]] = ...  # undocumented
     default_section: str
     @overload
     def __init__(

stdlib/http/server.pyi

@@ -30,8 +30,8 @@ class BaseHTTPRequestHandler(socketserver.StreamRequestHandler):
     MessageClass: type
     responses: Mapping[int, Tuple[str, str]]
     default_request_version: str  # undocumented
-    weekdayname: ClassVar[Sequence[str]] = ...  # Undocumented
-    monthname: ClassVar[Sequence[Optional[str]]] = ...  # Undocumented
+    weekdayname: ClassVar[Sequence[str]] = ...  # undocumented
+    monthname: ClassVar[Sequence[Optional[str]]] = ...  # undocumented
     def __init__(self, request: bytes, client_address: Tuple[str, int], server: socketserver.BaseServer) -> None: ...
     def handle(self) -> None: ...
     def handle_one_request(self) -> None: ...
@@ -49,7 +49,7 @@ class BaseHTTPRequestHandler(socketserver.StreamRequestHandler):
     def date_time_string(self, timestamp: Optional[int] = ...) -> str: ...
     def log_date_time_string(self) -> str: ...
     def address_string(self) -> str: ...
-    def parse_request(self) -> bool: ...  # Undocumented
+    def parse_request(self) -> bool: ...  # undocumented
 
 class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
     server_version: str

stdlib/socketserver.pyi

@@ -133,16 +133,16 @@ class BaseRequestHandler:
     def finish(self) -> None: ...
 
 class StreamRequestHandler(BaseRequestHandler):
-    rbufsize: ClassVar[int]  # Undocumented
-    wbufsize: ClassVar[int]  # Undocumented
-    timeout: ClassVar[Optional[float]]  # Undocumented
-    disable_nagle_algorithm: ClassVar[bool]  # Undocumented
-    connection: _socket  # Undocumented
+    rbufsize: ClassVar[int]  # undocumented
+    wbufsize: ClassVar[int]  # undocumented
+    timeout: ClassVar[Optional[float]]  # undocumented
+    disable_nagle_algorithm: ClassVar[bool]  # undocumented
+    connection: _socket  # undocumented
     rfile: BinaryIO
     wfile: BinaryIO
 
 class DatagramRequestHandler(BaseRequestHandler):
-    packet: _socket  # Undocumented
-    socket: _socket  # Undocumented
+    packet: _socket  # undocumented
+    socket: _socket  # undocumented
     rfile: BinaryIO
     wfile: BinaryIO

stdlib/urllib/request.pyi

@@ -51,10 +51,10 @@ 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
+    def proxy_bypass(host: str) -> Any: ...  # undocumented
 
 else:
-    def proxy_bypass(host: str, proxies: Optional[Mapping[str, str]] = ...) -> Any: ...  # Undocumented
+    def proxy_bypass(host: str, proxies: Optional[Mapping[str, str]] = ...) -> Any: ...  # undocumented
 
 class Request:
     @property