Patch by Jeremiah Lowin. Closes #20817.

... for missing keyword-only arguments. Patch by Jeremiah Lowin.
Closes #20816.

Patch by Antony Lee.

- <distutils.extension.Extension at 0x2b2088b79b00>
+ <distutils.extension.Extension('_struct') at 0x2b2088b79b00>

test_urllibnet.test_fileno intermittent failures with www.example.com.

failures when ssl is not present.

    68335b8afb1f 3.4
    ad0c75b7bd7d default

Previously a non-string, non-regex second argument and missing callable
argument could cause the test to appear to always pass.

Initial patch by Kamilla Holanda.

Remove useless test and unused variables. Initial patch by Andreas Schwab.

Éric Araujo.

Closes #18456: Doc fix: PyDict_Update only works with dict-like objects, not key-value sequences. Patch by priyapappachan.

tempfile.NamedTemporaryFile(), close the file descriptor if io.open() fails

close the file descriptor if io.open() fails

Closes #21043 by updating the documentation to remove specific CA
organizations and update the text to no longer need to tell you to
download root certificates, but instead use the OS certificates
avaialble through SSLContext.load_default_certs.

_PY_HASHTABLE_ENTRY_DATA => _Py_HASHTABLE_ENTRY_DATA