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[WARNING] Some users who downloaded the Python 3.5.8 .xz tarball got the wrong version

Due to awkward CDN caching, some users who downloaded the source code 
tarballs of Python 3.5.8 got a preliminary version instead of the final 
version.? As best as we can tell, this only affects the .xz release; 
there are no known instances of users downloading an incorrect version 
of the .tgz file.

If you downloaded "Python-3.5.8.tar.xz" during the first twelve hours of 
its release, you might be affected.? It's easy to determine this for 
yourself.? The file size (15,382,140 bytes) and MD5 checksum 
(4464517ed6044bca4fc78ea9ed086c36) published on the release page have 
always matched the correct version.? Also, the GPG signature file will 
only report a "Good signature" for the correct .xz file (using "gpg 

What's the difference between the two?? The only difference is that the 
final version also merges a fix for Python issue tracker #38243:

The fix adds a call to "html.escape" at a judicious spot, line 896 in 
Lib/xmlrpc/ The only other changes are one new test, to 
ensure this new code is working, and an entry in the NEWS file.? You can 
see the complete list of changes here:

What should you do?? It's up to you.

  * If you and your users aren't using the XMLRPC library built in to
    Python, you don't need to worry about which version of 3.5.8 you
  * If you downloaded the .tgz tarball or the Git repo, you already have
    the correct version.
  * If you downloaded the xz file and want to make sure you have the
    fix, check the MD5 sum, and if it's wrong download a fresh copy (and
    make sure that one matches the known good MD5 sum!).

To smooth over this whole sordid mess, I plan to make a 3.5.9 release in 
the next day or so.? It'll be identical to the 3.5.8 release; its only 
purpose is to ensure that all users have the same updated source code, 
including the fix for #38243.

Sorry for the mess, everybody,