This follows GNU gzip, which defaults to using 0 as the mtime
for compressing stdin, where no file mtime is involved.
This makes the output of gzip.compress() deterministic by default,
greatly helping reproducible builds.
Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Raise ValueError in add_argument() if either explicit nargs=0 or action
that does not consume arguments (like 'store_const' or 'store_true') is
specified for positional argument.
Also improve the documentation. Specify how dest and metavar are derived
from add_argument() positional arguments.
Co-authored-by: Simon Law <sfllaw@sfllaw.ca>
Previously, all nested mutually exclusive groups lost their connection
to the group containing them and were displayed as belonging directly
to the parser.
Co-authored-by: Danica J. Sutherland <djsutherland@users.noreply.github.com>
When formatting the AST as a string, infinite values are replaced by
1e309, which evaluates to infinity. The initialization of this string
replacement was not thread-safe in the free threading build.
- Move some Structure tests to test_structunion; use a common base
test class + two subclasses to run them on Union too
- Remove test_union for now as it's redundant
Note: `test_simple_structs` & `test_simple_unions` are in the common
file because they share `formats`.
memcopy'ing arbitrary values to _Bool variable triggers undefined
behaviour. Avoid this.
We assume that `false` is represented by all zero bytes.
Credits to Alex Gaynor.
Co-authored-by: Sam Gross <colesbury@gmail.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Petr Viktorin <encukou@gmail.com>
* Add definitions for "context", "current context", and "context
management protocol".
* Update related definitions to be consistent with the new
definitions.
* Restructure the documentation for the `contextvars.Context` class
to prepare for adding context manager support, and for consistency
with the definitions.
* Use `testcode` and `testoutput` to test the `Context.run` example.
* Expand the documentation for the `Py_CONTEXT_EVENT_ENTER` and
`Py_CONTEXT_EVENT_EXIT` events to clarify and to prepare for
planned changes.
Replace the private _PyUnicodeWriter with the public PyUnicodeWriter.
Replace PyObject_Repr() + _PyUnicodeWriter_WriteStr()
with PyUnicodeWriter_WriteRepr().
As argparse now detects by default when the code was run as a module.
This leads to using the actual executable name instead of simply "python"
to display in the usage message ("usage: python -m ...").
Fix a crash caused by immortal interned strings being shared between
sub-interpreters that use basic single-phase init. In that case, the string
can be used by an interpreter that outlives the interpreter that created and
interned it. For interpreters that share obmalloc state, also share the
interned dict with the main interpreter.
This is an un-revert of gh-124646 that then addresses the Py_TRACE_REFS
failures identified by gh-124785.
Bernhard M. Wiedemann
Serhiy Storchaka
Victor Stinner
Kumar Aditya
Rafael Fontenelle
Thomas Grainger
Victorien
Irit Katriel
Jelle Zijlstra
AN Long
Donghee Na
sobolevn
Y5
Jan Kaliszewski
Sam Gross
Savannah Ostrowski
Richard Hansen
Alex Waygood
Adam Turner
Justin Kunimune
Mark Shannon
Petr Viktorin
neonene
Sergey B Kirpichev
Pablo Galindo Salgado
Eric Snow