Drop support for Python 3.5 (#4675)

Python 3.5 EOL was on 2020-09-30.

stdlib/3/asyncio/base_events.pyi

@@ -34,8 +34,7 @@ class BaseEventLoop(AbstractEventLoop, metaclass=ABCMeta):
     def is_running(self) -> bool: ...
     def is_closed(self) -> bool: ...
     def close(self) -> None: ...
-    if sys.version_info >= (3, 6):
-        async def shutdown_asyncgens(self) -> None: ...
+    async def shutdown_asyncgens(self) -> None: ...
     # Methods scheduling callbacks.  All these return Handles.
     if sys.version_info >= (3, 7):
         def call_soon(self, callback: Callable[..., Any], *args: Any, context: Optional[Context] = ...) -> Handle: ...

stdlib/3/asyncio/constants.pyi

@@ -3,8 +3,7 @@ import sys
 
 LOG_THRESHOLD_FOR_CONNLOST_WRITES: int
 ACCEPT_RETRY_DELAY: int
-if sys.version_info >= (3, 6):
-    DEBUG_STACK_DEPTH: int
+DEBUG_STACK_DEPTH: int
 if sys.version_info >= (3, 7):
     SSL_HANDSHAKE_TIMEOUT: float
     SENDFILE_FALLBACK_READBUFFER_SIZE: int

stdlib/3/asyncio/futures.pyi

@@ -33,8 +33,6 @@ class Future(Awaitable[_T], Iterable[_T]):
     _exception: BaseException
     _blocking = False
     _log_traceback = False
-    if sys.version_info < (3, 6):
-        _tb_logger: Type[_TracebackLogger]
     def __init__(self, *, loop: Optional[AbstractEventLoop] = ...) -> None: ...
     def __repr__(self) -> str: ...
     def __del__(self) -> None: ...

stdlib/3/asyncio/sslproto.pyi

@@ -48,13 +48,7 @@ class _SSLProtocolTransport(transports._FlowControlMixin, transports.Transport):
     _loop: events.AbstractEventLoop
     _ssl_protocol: SSLProtocol
     _closed: bool
-
-    if sys.version_info >= (3, 6):
-        def __init__(self, loop: events.AbstractEventLoop, ssl_protocol: SSLProtocol) -> None: ...
-    else:
-        def __init__(
-            self, loop: events.AbstractEventLoop, ssl_protocol: SSLProtocol, app_protocol: protocols.BaseProtocol
-        ) -> None: ...
+    def __init__(self, loop: events.AbstractEventLoop, ssl_protocol: SSLProtocol) -> None: ...
     def get_extra_info(self, name: str, default: Optional[Any] = ...) -> Dict[str, Any]: ...
     def set_protocol(self, protocol: protocols.BaseProtocol) -> None: ...
     def get_protocol(self) -> protocols.BaseProtocol: ...

stdlib/3/asyncio/transports.pyi

@@ -9,9 +9,8 @@ class BaseTransport:
     def get_extra_info(self, name: Any, default: Any = ...) -> Any: ...
     def is_closing(self) -> bool: ...
     def close(self) -> None: ...
-    if sys.version_info >= (3, 5):
-        def set_protocol(self, protocol: BaseProtocol) -> None: ...
-        def get_protocol(self) -> BaseProtocol: ...
+    def set_protocol(self, protocol: BaseProtocol) -> None: ...
+    def get_protocol(self) -> BaseProtocol: ...
 
 class ReadTransport(BaseTransport):
     if sys.version_info >= (3, 7):