Log Message:
Changes 3.5.2:
Issue 27066: Fixed SystemError if a custom opener (for open()) returns a \ 
negative number without setting an exception.
Issue 20041: Fixed TypeError when frame.f_trace is set to None. Patch by Xavier \ 
de Gaye.
Issue 26168: Fixed possible refleaks in failing Py_BuildValue() with the \ 
“N” format unit.
Issue 26991: Fix possible refleak when creating a function with annotations.
Issue 27039: Fixed bytearray.remove() for values greater than 127. Patch by Joe \ 
Jevnik.
Issue 23640: int.from_bytes() no longer bypasses constructors for subclasses.
Issue 26811: gc.get_objects() no longer contains a broken tuple with NULL pointer.
Issue 20120: Use RawConfigParser for .pypirc parsing, removing support for \ 
interpolation unintentionally added with move to Python 3. Behavior no longer \ 
does any interpolation in .pypirc files, matching behavior in Python 2.7 and \ 
Setuptools 19.0.
Issue 26659: Make the builtin slice type support cycle collection.
Issue 26718: super.__init__ no longer leaks memory if called multiple times. \ 
NOTE: A direct call of super.__init__ is not endorsed!
Issue 25339: PYTHONIOENCODING now has priority over locale in setting the error \ 
handler for stdin and stdout.
Issue 26494: Fixed crash on iterating exhausting iterators. Affected classes are \ 
generic sequence iterators, iterators of str, bytes, bytearray, list, tuple, \ 
set, frozenset, dict, OrderedDict, corresponding views and os.scandir() \ 
iterator.
Issue 26581: If coding cookie is specified multiple times on a line in Python \ 
source code file, only the first one is taken to account.
Issue 26464: Fix str.translate() when string is ASCII and first replacements \ 
removes character, but next replacement uses a non-ASCII character or a string \ 
longer than 1 character. Regression introduced in Python 3.5.0.
Issue 22836: Ensure exception reports from PyErr_Display() and \ 
PyErr_WriteUnraisable() are sensible even when formatting them produces \ 
secondary errors. This affects the reports produced by sys.__excepthook__() and \ 
when __del__() raises an exception.
Issue 26302: Correct behavior to reject comma as a legal character for cookie names.
Issue 4806: Avoid masking the original TypeError exception when using star (*) \ 
unpacking in function calls. Based on patch by Hagen Fürstenau and Daniel \ 
Urban.
Issue 27138: Fix the doc comment for FileFinder.find_spec().
Issue 26154: Add a new private _PyThreadState_UncheckedGet() function to get the \ 
current Python thread state, but don’t issue a fatal error if it is NULL. \ 
This new function must be used instead of accessing directly the \ 
_PyThreadState_Current variable. The variable is no more exposed since Python \ 
3.5.1 to hide the exact implementation of atomic C types, to avoid compiler \ 
issues.
Issue 26194: Deque.insert() gave odd results for bounded deques that had reached \ 
their maximum size. Now an IndexError will be raised when attempting to insert \ 
into a full deque.
Issue 25843: When compiling code, don’t merge constants if they are equal \ 
but have a different types. For example, f1, f2 = lambda: 1, lambda: 1.0 is now \ 
correctly compiled to two different functions: f1() returns 1 (int) and f2() \ 
returns 1.0 (int), even if 1 and 1.0 are equal.
Issue 22995: [UPDATE] Comment out the one of the pickleability tests in \ 
_PyObject_GetState() due to regressions observed in Cython-based projects.
Issue 25961: Disallowed null characters in the type name.
Issue 25973: Fix segfault when an invalid nonlocal statement binds a name \ 
starting with two underscores.
Issue 22995: Instances of extension types with a state that aren’t \ 
subclasses of list or dict and haven’t implemented any pickle-related \ 
methods (__reduce__, __reduce_ex__, __getnewargs__, __getnewargs_ex__, or \ 
__getstate__), can no longer be pickled. Including memoryview.
Issue 20440: Massive replacing unsafe attribute setting code with special macro \ 
Py_SETREF.
Issue 25766: Special method __bytes__() now works in str subclasses.
Issue 25421: __sizeof__ methods of builtin types now use dynamic basic size. \ 
This allows sys.getsize() to work correctly with their subclasses with __slots__ \ 
defined.
Issue 25709: Fixed problem with in-place string concatenation and utf-8 cache.
Issue 27147: Mention PEP 420 in the importlib docs.
Issue 24097: Fixed crash in object.__reduce__() if slot name is freed inside \ 
__getattr__.
Issue 24731: Fixed crash on converting objects with special methods __bytes__, \ 
__trunc__, and __float__ returning instances of subclasses of bytes, int, and \ 
float to subclasses of bytes, int, and float correspondingly.
Issue 26478: Fix semantic bugs when using binary operators with dictionary views \ 
and tuples.
Issue 26171: Fix possible integer overflow and heap corruption in \ 
zipimporter.get_data().
Issue 25660: Fix TAB key behaviour in REPL with readline.
Issue 25887: Raise a RuntimeError when a coroutine object is awaited more than once.
Issue 27243: Update the __aiter__ protocol: instead of returning an awaitable \ 
that resolves to an asynchronous iterator, the asynchronous iterator should be \ 
returned directly. Doing the former will trigger a PendingDeprecationWarning.
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