* bpo-29882: Add an efficient popcount method for integers
* Update 'sign bit' and versionadded in docs
* Add entry to whatsnew document
* Doc: use positive example, mention population count
* Minor cleanups of the core code
* Move popcount_digit closer to where it's used
* Use z instead of self after conversion
* Add 'absolute value' and 'population count' to docstring
* Fix clinic error about missing summary line
* Ensure popcount_digit is portable with 64-bit ints
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
Added str.removeprefix and str.removesuffix methods and corresponding
bytes, bytearray, and collections.UserString methods to remove affixes
from a string if present. See PEP 616 for a full description.
Minor fix in documentation:
- `sys.__unraisablehook__` is new in version 3.8
- Optional `sep` and `bytes_per_sep` parameters for `bytearray.hex` is also supported in Python 3.8 (just like `bytes.hex`)
To be consistent with document layout, it should say when the feature was added.
Although it's mentioned few other places in the doc but it's not explicitly say that at that place.
https://bugs.python.org/issue39130
* "Return true/false" is replaced with "Return ``True``/``False``"
if the function actually returns a bool.
* Fixed formatting of some True and False literals (now in monospace).
* Replaced "True/False" with "true/false" if it can be not only bool.
* Replaced some 1/0 with True/False if it corresponds the code.
* "Returns <bool>" is replaced with "Return <bool>".
The documented definition was much broader than the real one:
there are tons of characters with general category "Other",
and we don't (and shouldn't) treat most of them as whitespace.
Rewrite the definition to agree with the comment on
_PyUnicode_IsWhitespace, and with the logic in makeunicodedata.py,
which is what generates that function and so ultimately governs.
Add suitable breadcrumbs so that a reader who wants to pin down
exactly what this definition means (what's a "bidirectional class"
of "B"?) can do so. The `unicodedata` module documentation is an
appropriate central place for our references to Unicode's own copious
documentation, so point there.
Also add to the isspace() test a thorough check that the
implementation agrees with the intended definition.
In development mode and in debug build, encoding and errors arguments
are now checked on string encoding and decoding operations. Examples:
open(), str.encode() and bytes.decode().
By default, for best performances, the errors argument is only
checked at the first encoding/decoding error, and the encoding
argument is sometimes ignored for empty strings.
* bpo-22385: Support output separators in hex methods.
Also in binascii.hexlify aka b2a_hex.
The underlying implementation behind all hex generation in CPython uses the
same pystrhex.c implementation. This adds support to bytes, bytearray,
and memoryview objects.
The binascii module functions exist rather than being slated for deprecation
because they return bytes rather than requiring an intermediate step through a
str object.
This change was inspired by MicroPython which supports sep in its binascii
implementation (and does not yet support the .hex methods).
https://bugs.python.org/issue22385
Dennis Sweeney
Niklas Fiekas
Zackery Spytz
Benjamin Peterson
Mark Dickinson
Brandt Bucher
Saiyang Gou
Victor Stinner
Khalid Mammadov
Jules Lasne (jlasne)
Serhiy Storchaka
toonarmycaptain
Adorilson Bezerra
Kishore Vancheeshwaran
Georgy Frolov
Kyle Stanley
Anjali
Greg Price
Julien Palard
Victor Stinner
Pablo Galindo
Gregory P. Smith
Jelle Zijlstra
Raymond Hettinger
Kingsley M
pewscorner
Andre Delfino
Stefan Krah
Rémi Lapeyre
Xtreak
Sanyam Khurana
Lisa Roach
Windson yang
wim glenn