See [PEP 597](https://www.python.org/dev/peps/pep-0597/).
* Add `-X warn_default_encoding` and `PYTHONWARNDEFAULTENCODING`.
* Add EncodingWarning
* Add io.text_encoding()
* open(), TextIOWrapper() emits EncodingWarning when encoding is omitted and warn_default_encoding is enabled.
* _pyio.TextIOWrapper() uses UTF-8 as fallback default encoding used when failed to import locale module. (used during building Python)
* bz2, configparser, gzip, lzma, pathlib, tempfile modules use io.text_encoding().
* What's new entry
The case of tempfile.tempdir variable being bytes is now handled consistently.
The getters return the right type and no more error of mixing str and bytes unless explicitly caused by the user.
Adds a regression test.
Expands the documentation to clarify the behavior.
Co-authored-by: Eric L <ewl+git@lavar.de>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
The _RandomSequence class in tempfile used to check the current pid every time its rng property was used.
This commit replaces this code with `os.register_at_fork` to reduce the overhead.
This implements things like `list[int]`,
which returns an object of type `types.GenericAlias`.
This object mostly acts as a proxy for `list`,
but has attributes `__origin__` and `__args__`
that allow recovering the parts (with values `list` and `(int,)`.
There is also an approximate notion of type variables;
e.g. `list[T]` has a `__parameters__` attribute equal to `(T,)`.
Type variables are objects of type `typing.TypeVar`.
When bpo-12015 got resolved by increasing the length of the
random string generated by _RandomNameSequence from six to eight
characters, the docstring of the class was not adjusted accordingly.
Issue #26604:
* Add a new optional source parameter to _warnings.warn() and warnings.warn()
* Modify asyncore, asyncio and _pyio modules to set the source parameter when
logging a ResourceWarning warning
The mkstemp() and mkdtemp() signatures have already been updated, but the
higher-level functions still suggest that the default values are forced to
text strings. Also merged some paragraphs describing the "suffix" and
"prefix" parameters, and pointed out that mktemp() does not support the new
changes.
when a directory with the chosen name already exists on Windows as well as
on Unix. tempfile.mkstemp() now fails early if parent directory is not
valid (not exists or is a file) on Windows.
when a directory with the chosen name already exists on Windows as well as
on Unix. tempfile.mkstemp() now fails early if parent directory is not
valid (not exists or is a file) on Windows.
some circunstances while NamedTemporaryFile object was living. This causes
failing test_csv. Changed the implementation of NamedTemporaryFile.__iter__
to make tests passed.
some circunstances while NamedTemporaryFile object was living. This causes
failing test_csv. Changed the implementation of NamedTemporaryFile.__iter__
to make tests passed.
successful when called during nulling out of modules during shutdown.
Misleading exception no longer raised when resource warning is emitted
during shutdown.
Catherine Devlin
Inada Naoki
CAM Gerlach
Eric L
Eric W
Rishav Kundu
Batuhan Taşkaya
Guido van Rossum
Shantanu
Batuhan Taşkaya
Steve Dower
Serhiy Storchaka
Anthony Sottile
sth
Steve Dower
Wolfgang Maier
Antoine Pitrou
Victor Stinner
Martin Panter
Gregory P. Smith
R David Murray
Yury Selivanov