bpo-39413: os.unsetenv() is not available on Windows (GH-18108)

vstinner · web-flow · commit f84f65be5602 · 2020-01-22T13:50:40.000+01:00
Update os.unsetenv() documentation: it is not available on Windows.
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
@@ -643,7 +643,7 @@ process and user.
    calls to :func:`unsetenv` don't update ``os.environ``, so it is actually
    preferable to delete items of ``os.environ``.
 
-   .. availability:: most flavors of Unix, Windows.
+   .. availability:: most flavors of Unix.
 
 
 .. _os-newstreams:
