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gh-114678: Fix incorrect deprecation warning for 'N' specifier in Decimal format (GH-114683)

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Co-authored-by: Stefan Krah <skrah@bytereef.org>
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Serhiy Storchaka 2024-01-29 19:58:31 +02:00 • committed by GitHub
parent 0cd9bacb8a
commit aa3402ad45
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3 changed files with 20 additions and 7 deletions
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10
Lib/test/test_decimal.py
View file

@ -41,6 +41,7 @@ from test.support import (TestFailed,
darwin_malloc_err_warning, is_emscripten)
from test.support.import_helper import import_fresh_module
from test.support import threading_helper
from test.support import warnings_helper
import random
import inspect
import threading
@ -1237,7 +1238,14 @@ class FormatTest:
else:
self.assertRaises(ValueError, format, h, 'N')
self.assertRaises(ValueError, format, h, '010.3N')
with warnings_helper.check_no_warnings(self):
self.assertEqual(format(h, 'N>10.3'), 'NN6.63E-34')
self.assertEqual(format(h, 'N>10.3n'), 'NN6.63e-34')
self.assertEqual(format(h, 'N>10.3e'), 'N6.626e-34')
self.assertEqual(format(h, 'N>10.3f'), 'NNNNN0.000')
self.assertRaises(ValueError, format, h, '>Nf')
self.assertRaises(ValueError, format, h, '10Nf')
self.assertRaises(ValueError, format, h, 'Nx')
@run_with_locale('LC_ALL', 'ps_AF')
def test_wide_char_separator_decimal_point(self):

3
Misc/NEWS.d/next/Library/2024-01-28-19-40-40.gh-issue-114678.kYKcJw.rst Normal file
View file

@ -0,0 +1,3 @@
Ensure that deprecation warning for 'N' specifier in :class:`~decimal.Decimal`
format is not raised for cases where 'N' appears in other places
in the format specifier. Based on patch by Stefan Krah.

14
Modules/_decimal/_decimal.c
View file

@ -3446,6 +3446,14 @@ dec_format(PyObject *dec, PyObject *args)
if (fmt == NULL) {
return NULL;
}
if (size > 0 && fmt[size-1] == 'N') {
if (PyErr_WarnEx(PyExc_DeprecationWarning,
"Format specifier 'N' is deprecated", 1) < 0) {
return NULL;
}
}
/* NOTE: If https://github.com/python/cpython/pull/29438 lands, the
* format string manipulation below can be eliminated by enhancing
* the forked mpd_parse_fmt_str(). */
@ -3593,12 +3601,6 @@ dec_format(PyObject *dec, PyObject *args)
if (replace_fillchar) {
dec_replace_fillchar(decstring);
}
if (strchr(fmt, 'N') != NULL) {
if (PyErr_WarnEx(PyExc_DeprecationWarning,
"Format specifier 'N' is deprecated", 1) < 0) {
goto finish;
}
}
result = PyUnicode_DecodeUTF8(decstring, size, NULL);