Based on patch by Xiang Zhang.

Upstream https://github.com/python/asyncio/pull/408 by Ron Frederick.

Upstream https://github.com/python/asyncio/pull/374 by Ron Frederick.

Perhaps the BytesParser 'text' argument should really be bytes, but
it hasn't been, it has been text, so for backward compatibility
and for consistency with the regular Parser class, I'm keeping it
as 'text'.

test_tools is pretty much useless unless somebody copies the scripts
it tests into the proper location, but we might as well install it
anyway to make sure it skips properly.  test_warnings just didn't get
included when it was turned into a package in 94966dfd3bd3.

creates not a cursor.  Patch by Xiang Zhang.

In Subversion r86731, the path was changed from $(BINLIBDEST)/config to
$(LIBDEST)/config-$(LDVERSION).

Also adjust the test condition, because enable-meta-key was only added in
6.1, not 6.0.

Statements should not be reset after a commit.

Backported from https://github.com/ghaering/pysqlite/commit/029050896b1e6058573abeef5a8970384c0c7faa

Patch by Jaysinh Shukla and Stéphane Wirtel.

Patch by SilengGhost.

This was found by PVS-Studio:

V595 The 'def' pointer was utilized before it was verified
against nullptr. Check lines: 286, 292. pystate.c 286

Initial patch by Christian Heimes.

Issue #27539: Fix unnormalised Fraction.__pow__ result for negative exponent and base. Thanks Vedran Čačić.

According to PEP 249, cursor.description must be
available for any SELECT statements, such as those
that use CTEs.

Backported from https://github.com/ghaering/pysqlite/commit/f67fa9c898a4713850e16934046f0fe2cba8c44c

Additional test cases added by me.

Multi-phase extension module import now correctly allows the
``m_methods`` field to be used to add module level functions
to instances of non-module types returned from ``Py_create_mod``.

Patch by Xiang Zhang.

Also try to clarify the find_spec() error message.