gh-98347: Add links to python-isal in the documentation (#98637)

Clearly note that this is primarily intended for users for who zlib/gzip is a bottleneck.

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>

diff --git a/Doc/library/gzip.rst b/Doc/library/gzip.rst
index 4222f1bb1f49aef160c733bd4ea259e69afa3550..c9d96085ef739d7b3cad6c544cb27dbead763a3b 100644 (file)
--- a/Doc/library/gzip.rst
+++ b/Doc/library/gzip.rst
@@ -258,6 +258,10 @@ Example of how to GZIP compress a binary string::
       The basic data compression module needed to support the :program:`gzip` file
       format.
 
+   In case gzip (de)compression is a bottleneck, the `python-isal`_
+   package speeds up (de)compression with a mostly compatible API.
+
+   .. _python-isal: https://github.com/pycompression/python-isal
 
 .. program:: gzip
 

diff --git a/Doc/library/zlib.rst b/Doc/library/zlib.rst
index db0537f8ccc0a69e465c68ed4a55db0192a2593d..75ead3c4cb144c26ba0d4898f074f076394951bb 100644 (file)
--- a/Doc/library/zlib.rst
+++ b/Doc/library/zlib.rst
@@ -353,3 +353,8 @@ the following constants:
    http://www.zlib.net/manual.html
       The zlib manual explains  the semantics and usage of the library's many
       functions.
+
+   In case gzip (de)compression is a bottleneck, the `python-isal`_
+   package speeds up (de)compression with a mostly compatible API.
+
+   .. _python-isal: https://github.com/pycompression/python-isal