Issue #16819: IDLE method completion now correctly works for bytes literals.

diff --cc Misc/NEWS
index 726777ec0a8122dcf124a7b5edb7f9d8f9396a70,9b22629ec182411b9df006b07dfd7d7305afec0a..594d7f1ff778dbf3e73e91c2ea816d17ba725177
--- 1/Misc/NEWS
--- 2/Misc/NEWS
+++ b/Misc/NEWS
@@@ -200,12 -124,11 +200,14 @@@ Core and Builtin
  Library
  -------
  
+ - Issue #16819: IDLE method completion now correctly works for bytes literals.
+ 
  - Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy.
  
 -- Issue 10527: make multiprocessing use poll() instead of select() if available.
 +- Issue #16787: Increase asyncore and asynchat default output buffers size, to
 +  decrease CPU usage and increase throughput.
 +
 +- Issue #10527: make multiprocessing use poll() instead of select() if available.
  
  - Issue #16688: Fix backreferences did make case-insensitive regex fail on
    non-ASCII strings. Patch by Matthew Barnett.