Applied suggestions from PR comments

* Fixed sorting of imports
* Fixed formatting in the NEWS entry
* Reworded the explanatory comment

Author: Konstantin Vlasov

Lib/asyncio/base_events.py

@@ -19,17 +19,17 @@
 import errno
 import heapq
 import itertools
+import math
 import os
 import socket
 import stat
 import subprocess
+import sys
 import threading
 import time
 import traceback
-import sys
 import warnings
 import weakref
-import math
 
 try:
     import ssl
@@ -2024,8 +2024,8 @@ def _run_once(self):
 
         # Handle 'later' callbacks that are ready.
         now = self.time()
-        # If clock resolution is too small, make sure end_time has the minimal
-        # possible increment
+        # Ensure that `end_time` is strictly increasing
+        # when the clock resolution is too small.
         end_time = now + max(self._clock_resolution, math.ulp(now))
         while self._scheduled:
             handle = self._scheduled[0]

Misc/NEWS.d/next/Library/2026-03-09-19-59-05.gh-issue-145703.4EEP7J.rst

@@ -1,2 +1,2 @@
-Make sure asyncio.BaseEventLoop triggers scheduled events on time when clock
-resolution is too small.
+:mod:`asyncio`: Make sure that :class:`~asyncio.BaseEventLoop` triggers
+scheduled events on time when the clock resolution becomes too small.