python / cpython

Remove PREDICTion of POP_BLOCK from FOR_ITER.

In the "Sequences (Tuples/Lists)" section, add
"How do you remove multiple items from a list".

GH-22441)

Add codecs.unregister() and PyCodec_Unregister() functions
to unregister a codec search function.

…9337)

* bpo-41870: Use PEP 590 vectorcall to speed up bool()

* bpo-41870: Add NEWS.d

…typing (GH-22340)

This shows users that they can use the actual types. Using deprecated types is confusing.

This also prefers colections.abc.Sized instead of the alias typing.Sized. I guess the aliases were created to make it convenient to import all collections related types from the same place.

This should be backported to 3.9.

Automerge-Triggered-By: @gvanrossum

…GH-22417)

The existing line is easily read as being incomplete.

This commit reverts commit ac0333e as the original links are working again and they provide extended features such as comments and alternative versions.

Use Py_ssize_t type rather than int, to store lengths in
unionobject.c. Fix the warning:

Objects\unionobject.c(205,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Same changes as #22276 squashed to a single commit. Just hoping to get Travis to cooperate by opening a new PR...

Automerge-Triggered-By: @vsajip

)

* Account for control blocks in 'except' in compiler. Fixes #39934.

'Python Shell' may have contributed to some beginners confusing 'IDLE' with ' Python'.

Use Py_ssize_t type rather than int, to store lengths in
unionobject.c. Fix warnings:

Objects\unionobject.c(189,71): warning C4244: '+=':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(182,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(205,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Objects\unionobject.c(437,1): warning C4244: 'initializing':
conversion from 'Py_ssize_t' to 'int', possible loss of data

Fix warning:

Objects\exceptions.c(2324,56): warning C4098:
'MemoryError_dealloc': 'void' function returning a value

Add PyDateTime_DATE_GET_TZINFO() and PyDateTime_TIME_GET_TZINFO()
macros.

…rser.read (GH-15177)

Co-Authored-By: Kyle Stanley <[email protected]>
Co-Authored-By: Paul Ganssle <[email protected]>

Use _PyType_HasFeature() in the _io module and in structseq
implementation. Replace PyType_HasFeature() opaque function call with
_PyType_HasFeature() inlined function.

Explicitly cast a difference of two pointers to int:
PyFrameObject.f_stackdepth is an int.

Add explicit casts to fix compiler warnings in
fold_tuple_on_constants().

The limit of constants per code is now INT_MAX, rather than UINT_MAX.

Fix PyUnicode_InternInPlace() when the INTERNED_STRINGS macro is not
defined (when the EXPERIMENTAL_ISOLATED_SUBINTERPRETERS macro is
defined).

Remove the global _Py_CheckRecursionLimit variable: it has been
replaced by ceval.recursion_limit of the PyInterpreterState
structure.

There is no need to keep the variable for the stable ABI, since
Py_EnterRecursiveCall() and Py_LeaveRecursiveCall() were not usable
in Python 3.8 and older: these macros accessed PyThreadState members,
whereas the PyThreadState structure is opaque in the limited C API.

…GH-22328)

Co-authored-by: Victor Stinner <[email protected]>

…-22220)

…e names. (GH-22368)

use `str.__str__` for `StrEnum` so that `str(StrEnum.member)` is the same as directly accessing the string value of the `StrEnum` member