python / cpython

…24386)

Update bundled pip to 21.0.1 and setuptools to 52.0.0

GH-24384)

The documentation for some parts of the logging.config formatters has
fallen behind the code.  For example, the dictionary-schema section
does not list the "class" attribute, however it is discussed in the
file/ini discussion; and neither references the style argument which
has been added.

This modifies the dictionary-schema formatters documentation to list
the keys available and overall makes it clearer these are passed to
create a logging.Formatter object.

The logging.Formatter documentation describes the default values of
format/datefmt and the various formatting options.  Since we have now
more clearly described how the configuration is created via this type
of object, we remove the discussion in this document to avoid
duplication and rely on users reading the referenced logging.Formatter
documenation directly for such details.

Instead of duplicating the discussion for the two config types, the
file/ini section is modified to link back to the dictionary-schema
discussion, making it clear the same arguments are accepted.

Automerge-Triggered-By: GH:vsajip

* Replace Py_FatalError() calls with regular SystemError exceptions.
* compiler_exit_scope() calls _PyErr_WriteUnraisableMsg() to log the
  PySequence_DelItem() failure.
* compiler_unit_check() uses _PyMem_IsPtrFreed().
* compiler_make_closure(): remove "(reftype == FREE)" comment since
  reftype can also be LOCAL or GLOBAL_EXPLICIT.

math_nextafter_impl() must return a Python object, not a C double.

…H-24355)

Automerge-Triggered-By: GH:JulienPalard

Found it while translating it to french 🤷

Automerge-Triggered-By: GH:JulienPalard

When Python is built in debug mode (with C assertions), calling a
type slot like sq_length (__len__() in Python) now fails with a fatal
error if the slot succeeded with an exception set, or failed with no
exception set. The error message contains the slot, the type name,
and the current exception (if an exception is set).

* Check the result of all slots using _Py_CheckSlotResult().
* No longer pass op_name to ternary_op() in release mode.
* Replace operator with dunder Python method name in error messages.
  For example, replace "*" with "__mul__".
* Fix compiler_exit_scope() when an exception is set.
* Fix bytearray.extend() when an exception is set: don't call
  bytearray_setslice() with an exception set.

…yEval_CodeEval and friends (GH-24298)

* Introduce 'frame constructor' to simplify API for frame creation

* Embed struct using a macro to conform to PEP 7

Starting stack viewer when user code is running, including when Debugger is active, hangs or crashes IDLE.

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

* bpo-42979: Enhance abstract.c assertions checking slot result

Add _Py_CheckSlotResult() function which fails with a fatal error if
a slot function succeeded with an exception set or failed with no
exception set: write the slot name, the type name and the current
exception (if an exception is set).

…re (GH-24333)

Importing datetime can fail.

Pass --timeout=$(TESTTIMEOUT) option to the default profile task
"./python -m test --pgo" command.

GH-24345)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

* [Enum] only include .rst test if file available

In order to ensure the ReST documentation is up to date for Enum,
use doctest to check it -- but only if the .rst files have not
been stripped.

…GH-24334)

* bpo-33387: remove obsolete comment

* bpo-33387: update SETUP_WITH opcode documentation

Automerge-Triggered-By: GH:Mariatta

Flag members are now divided by one-bit verses multi-bit, with multi-bit being treated as aliases. Iterating over a flag only returns the contained single-bit flags.

Iterating, repr(), and str() show members in definition order.

When constructing combined-member flags, any extra integer values are either discarded (CONFORM), turned into ints (EJECT) or treated as errors (STRICT). Flag classes can specify which of those three behaviors is desired:

>>> class Test(Flag, boundary=CONFORM):
...     ONE = 1
...     TWO = 2
...
>>> Test(5)
<Test.ONE: 1>

Besides the three above behaviors, there is also KEEP, which should not be used unless necessary -- for example, _convert_ specifies KEEP as there are flag sets in the stdlib that are incomplete and/or inconsistent (e.g. ssl.Options). KEEP will, as the name suggests, keep all bits; however, iterating over a flag with extra bits will only return the canonical flags contained, not the extra bits.

Iteration is now in member definition order.  If member definition order
matches increasing value order, then a more efficient method of flag
decomposition is used; otherwise, sort() is called on the results of
that method to get definition order.


``re`` module:

repr() has been modified to support as closely as possible its previous
output; the big difference is that inverted flags cannot be output as
before because the inversion operation now always returns the comparable
positive result; i.e.

   re.A|re.I|re.M|re.S is ~(re.L|re.U|re.S|re.T|re.DEBUG)

in both of the above terms, the ``value`` is 282.

re's tests have been updated to reflect the modifications to repr().

* Rename _Py_module_names to _Py_stdlib_module_names.
* Rename Python/module_names.h to Python/stdlib_module_names.h.

…ctory changed (#23412)

This commit only adds tests and a news entry. The actual bug was fixed in the earlier commit.

)

Replace versionchanged markup with versionadded.

Add sys.module_names, containing the list of the standard library
module names.

Lowercase 'tkColorChooser', 'tkFileDialog', 'tkSimpleDialog', and
'tkMessageBox' and remove 'tk'.  Just lowercase 'tkFont' as 'font'
is already used.  Adjust import.

)

Previously it was an error with confusing error message.