gh-108903: Remove unneeded lambdas from asyncio (GH-108904)

Author: sobolevn

Doc/library/asyncio-protocol.rst

@@ -746,7 +746,7 @@ received data, and close the connection::
         loop = asyncio.get_running_loop()
 
         server = await loop.create_server(
-            lambda: EchoServerProtocol(),
+            EchoServerProtocol,
             '127.0.0.1', 8888)
 
         async with server:
@@ -850,7 +850,7 @@ method, sends back received data::
         # One protocol instance will be created to serve all
         # client requests.
         transport, protocol = await loop.create_datagram_endpoint(
-            lambda: EchoServerProtocol(),
+            EchoServerProtocol,
             local_addr=('127.0.0.1', 9999))
 
         try:

Lib/asyncio/sslproto.py

@@ -539,7 +539,7 @@ def _start_handshake(self):
         # start handshake timeout count down
         self._handshake_timeout_handle = \
             self._loop.call_later(self._ssl_handshake_timeout,
-                                  lambda: self._check_handshake_timeout())
+                                  self._check_handshake_timeout)
 
         self._do_handshake()
 
@@ -619,7 +619,7 @@ def _start_shutdown(self):
             self._set_state(SSLProtocolState.FLUSHING)
             self._shutdown_timeout_handle = self._loop.call_later(
                 self._ssl_shutdown_timeout,
-                lambda: self._check_shutdown_timeout()
+                self._check_shutdown_timeout
             )
             self._do_flush()
 
@@ -758,7 +758,7 @@ def _do_read__buffered(self):
                     else:
                         break
                 else:
-                    self._loop.call_soon(lambda: self._do_read())
+                    self._loop.call_soon(self._do_read)
         except SSLAgainErrors:
             pass
         if offset > 0: