__bytes__, __trunc__, and __float__ returning instances of subclasses of
bytes, int, and float to subclasses of bytes, int, and float correspondingly.
+- Issue #25630: Fix a possible segfault during argument parsing in functions
+ that accept filesystem paths.
+
+- Issue #23564: Fixed a partially broken sanity check in the _posixsubprocess
+ internals regarding how fds_to_pass were passed to the child. The bug had
+ no actual impact as subprocess.py already avoided it.
+
+- Issue #25388: Fixed tokenizer crash when processing undecodable source code
+ with a null byte.
+
+- Issue #25462: The hash of the key now is calculated only once in most
+ operations in C implementation of OrderedDict.
+
+- Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now
+ rejects builtin types with not defined __new__.
+
+- Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec()
+ and eval() are passed bytes-like objects. These objects are not
+ necessarily terminated by a null byte, but the functions assumed they were.
+
+- Issue #25555: Fix parser and AST: fill lineno and col_offset of "arg" node
+ when compiling AST from Python objects.
+
+- Issue #24726: Fixed a crash and leaking NULL in repr() of OrderedDict that
+ was mutated by direct calls of dict methods.
+
+- Issue #25449: Iterating OrderedDict with keys with unstable hash now raises
+ KeyError in C implementations as well as in Python implementation.
+
+- Issue #25395: Fixed crash when highly nested OrderedDict structures were
+ garbage collected.
+
+- Issue #25401: Optimize bytes.fromhex() and bytearray.fromhex(): they are now
+ between 2x and 3.5x faster.
+
+- Issue #25399: Optimize bytearray % args using the new private _PyBytesWriter
+ API. Formatting is now between 2.5 and 5 times faster.
+
+- Issue #25274: sys.setrecursionlimit() now raises a RecursionError if the new
+ recursion limit is too low depending at the current recursion depth. Modify
+ also the "lower-water mark" formula to make it monotonic. This mark is used
+ to decide when the overflowed flag of the thread state is reset.
+
+- Issue #24402: Fix input() to prompt to the redirected stdout when
+ sys.stdout.fileno() fails.
+
+- Issue #25349: Optimize bytes % args using the new private _PyBytesWriter API.
+ Formatting is now up to 2 times faster.
+
+- Issue #24806: Prevent builtin types that are not allowed to be subclassed from
+ being subclassed through multiple inheritance.
+
+- Issue #25301: The UTF-8 decoder is now up to 15 times as fast for error
+ handlers: ``ignore``, ``replace`` and ``surrogateescape``.
+
+- Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data.
+
+- Issue #25267: The UTF-8 encoder is now up to 75 times as fast for error
+ handlers: ``ignore``, ``replace``, ``surrogateescape``, ``surrogatepass``.
+ Patch co-written with Serhiy Storchaka.
+
+- Issue #25280: Import trace messages emitted in verbose (-v) mode are no
+ longer formatted twice.
+
+- Issue #25227: Optimize ASCII and latin1 encoders with the ``surrogateescape``
+ error handler: the encoders are now up to 3 times as fast. Initial patch
+ written by Serhiy Storchaka.
+
+- Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the
+ getrandom() function instead of the getentropy() function. The getentropy()
+ function is blocking to generate very good quality entropy, os.urandom()
+ doesn't need such high-quality entropy.
+
+- Issue #9232: Modify Python's grammar to allow trailing commas in the
+ argument list of a function declaration. For example, "def f(\*, a =
+ 3,): pass" is now legal. Patch from Mark Dickinson.
+
+- Issue #24965: Implement PEP 498 "Literal String Interpolation". This
+ allows you to embed expressions inside f-strings, which are
+ converted to normal strings at run time. Given x=3, then
+ f'value={x}' == 'value=3'. Patch by Eric V. Smith.
+
+ - Issue #26171: Fix possible integer overflow and heap corruption in
+ zipimporter.get_data().
+
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