Fix a crash in hamt.c caused by enabling GC tracking for an object that hadn't all of its fields set to NULL.
Fix a crash in Python initialization when parsing the command line options. Thanks Christoph Gohlke for the bug report and the fix!
Fixed reset of the SIGINT handler to SIG_DFL on interpreter shutdown even when there was a custom handler set previously. Patch by Philipp Kerling.
Fix signed/unsigned comparison warning in pyhash.c.
Prevent site.main() exception if PYTHONSTARTUP is set. Patch by Steve Weber.
Datetime instance d with non-None tzinfo, but with d.tzinfo.utcoffset(d) returning None is now treated as naive by the astimezone() method.
Avoid race condition with debug logging
asyncio: Fix a race condition causing data loss on pause_reading()/resume_reading() when using the ProactorEventLoop.
Correct test for uuid_enc_be availability in configure.ac. Patch by
Michael Felt.
Add asyncio.WindowsSelectorEventLoopPolicy and asyncio.WindowsProactorEventLoopPolicy.
Update unicodedata's database to Unicode version 11.0.0.
improve base64 exception message for encoded inputs of invalid length
asyncio/start_tls: Fix error message; cancel callbacks in case of an unhandled error; mark SSLTransport as closed if it is aborted.
The concatenation (+) and repetition (*) sequence operations now
raise :exc:`TypeError` instead of :exc:`SystemError` when performed on
:class:`mmap.mmap` objects. Patch by Zackery Spytz.
asyncio/ssl: Fix AttributeError, increase default handshake timeout
Use a better regex when breaking usage into wrappable parts. Avoids bogus assertion errors from custom metavar strings.
Emit a deprecation warning for inspect.formatargspec
Clarified the relationship between PEP 538's PYTHONCOERCECLOCALE and PEP 540's PYTHONUTF8 mode.
Improve the documentation of :func:`asyncio.open_connection`, :func:`asyncio.start_server` and their UNIX socket counterparts.
Clarify meaning of CERT_NONE, CERT_OPTIONAL, and CERT_REQUIRED flags for ssl.SSLContext.verify_mode.
Move -Wstrict-prototypes option to CFLAGS_NODIST from OPT. This
option emitted annoying warnings when building extension modules written in
C++.
Reduces maximum marshal recursion depth on release builds.
On Windows, add API call saying that tk scales for DPI. On Windows 8.1+ or 10, with DPI compatibility properties of the Python binary unchanged, and a monitor resolution greater than 96 DPI, this should make text and lines sharper. It should otherwise have no effect.
Clicking on a context line moves that line to the top of the editor window.
IDLE: Use read-only text widget for code context instead of label widget.
Scroll IDLE editor text by lines. Previously, the mouse wheel and scrollbar slider moved text by a fixed number of pixels, resulting in partial lines at the top of the editor box. The change also applies to the shell and grep output windows, but not to read-only text views.
Enable theme-specific color configuration for Code Context. Use the Highlights tab to see the setting for built-in themes or add settings to custom themes.
Display up to maxlines non-blank lines for Code Context. If there is no current context, show a single blank line.