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bpo-33731: Implement support for locale specific format (WIP) #8612

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james-emerton wants to merge 4 commits into from
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bpo-33731: Implement support for locale specific format (WIP) #8612

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cbb7e9e
Implement support for locale specific decimal format
james-emerton Aug 2, 2018
0927901
Improve Decimal format tests
james-emerton Aug 4, 2018
79b9b83
Reverting Decimal format changes
james-emerton Aug 4, 2018
6cb6064
bpo-33731: Add locale modifier to Decimal.__format__
james-emerton Aug 5, 2018
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12 changes: 9 additions & 3 deletions 12 Lib/_pydecimal.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6152,7 +6152,7 @@ def _convert_for_comparison(self, other, equality_op=False):
(?P<alt>\#)?
(?P<zeropad>0)?
(?P<minimumwidth>(?!0)\d+)?
(?P<thousands_sep>,)?
(?P<thousands_sep>[,'])?
(?:\.(?P<precision>0|(?!0)\d+))?
(?P<type>[eEfFgGn%])?
\Z
Expand Down Expand Up @@ -6241,10 +6241,16 @@ def _parse_format_specifier(format_spec, _localeconv=None):
format_dict['grouping'] = _localeconv['grouping']
format_dict['decimal_point'] = _localeconv['decimal_point']
else:
if format_dict['thousands_sep'] is None:
format_dict['thousands_sep'] = ''
format_dict['grouping'] = [3, 0]
format_dict['decimal_point'] = '.'
if format_dict['thousands_sep'] is None:
format_dict['thousands_sep'] = ''
elif format_dict['thousands_sep'] == "'":
if _localeconv is None:
_localeconv = _locale.localeconv()
format_dict['thousands_sep'] = _localeconv['thousands_sep']
format_dict['grouping'] = _localeconv['grouping']
format_dict['decimal_point'] = _localeconv['decimal_point']

return format_dict

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36 changes: 35 additions & 1 deletion 36 Lib/test/test_decimal.py
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Expand Up @@ -1075,7 +1075,7 @@ def test_formatting(self):
# bytes format argument
self.assertRaises(TypeError, Decimal(1).__format__, b'-020')

def test_n_format(self):
def test_locale_format(self):
Decimal = self.decimal.Decimal

try:
Expand Down Expand Up @@ -1164,6 +1164,40 @@ def get_fmt(x, override=None, fmt='n'):
self.assertEqual(get_fmt(Decimal('-1.5'), dotsep_wide, '020n'),
'-0\u00b4000\u00b4000\u00b4000\u00b4001\u00bf5')

# locale grouping modifier
self.assertEqual(get_fmt(123456789, en_US, "'f"), '123,456,789')
self.assertEqual(get_fmt(123456789, fr_FR, "'f"), '123456789')
self.assertEqual(get_fmt(123456789, ru_RU, "'f"), '123 456 789')
self.assertEqual(get_fmt(1234567890123, crazy, "'f"),
'123456-78-9012-3')

self.assertEqual(get_fmt('123456789.123', en_US, "'.2f"),
'123,456,789.12')
self.assertEqual(get_fmt('123456789.123', fr_FR, "'.2f"),
'123456789,12')
self.assertEqual(get_fmt('123456789.123', ru_RU, "'.2f"),
'123 456 789,12')
self.assertEqual(get_fmt('1234567890123.123', crazy, "'.2f"),
'123456-78-9012-3&12')

self.assertEqual(get_fmt(123456789, en_US, "'.6e"), '1.234568e+8')
self.assertEqual(get_fmt(123456789, fr_FR, "'.6e"), '1,234568e+8')
self.assertEqual(get_fmt(123456789, ru_RU, "'.6e"), '1,234568e+8')
self.assertEqual(get_fmt(123456789, crazy, "'.6e"), '1&234568e+8')

self.assertEqual(get_fmt(123456789, en_US, "'.6g"), '1.23457e+8')
self.assertEqual(get_fmt(123456789, fr_FR, "'.6g"), '1,23457e+8')
self.assertEqual(get_fmt(123456789, ru_RU, "'.6g"), '1,23457e+8')
self.assertEqual(get_fmt(123456789, crazy, "'.6g"), '1&23457e+8')

self.assertEqual(get_fmt(12345, en_US, "05'g"), '12,345')
self.assertEqual(get_fmt(12345, en_US, "06'g"), '12,345')
self.assertEqual(get_fmt(12345, en_US, "07'g"), '012,345')
self.assertEqual(get_fmt(12345, en_US, "08'g"), '0,012,345')
self.assertEqual(get_fmt(12345, en_US, "09'g"), '0,012,345')
self.assertEqual(get_fmt(12345, en_US, "010'g"), '00,012,345')


@run_with_locale('LC_ALL', 'ps_AF')
def test_wide_char_separator_decimal_point(self):
# locale with wide char separator and decimal point
Expand Down
9 changes: 9 additions & 0 deletions 9 Modules/_decimal/libmpdec/io.c
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Original file line number Diff line number Diff line change
Expand Up @@ -846,6 +846,15 @@ mpd_parse_fmt_str(mpd_spec_t *spec, const char *fmt, int caps)
cp++;
}

/* locale specific thousands separator */
if (*cp == '\'') {
struct lconv *lc = localeconv();
spec->dot = lc->decimal_point;
spec->sep = lc->thousands_sep;
spec->grouping = lc->grouping;
cp++;
}

/* fraction digits or significant digits */
if (*cp == '.') {
cp++;
Expand Down
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