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gh-87790: support thousands separators for formatting fractional part of Decimal (#132202)

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Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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Sergey B Kirpichev 2025-07-07 11:16:27 +03:00 • committed by GitHub
parent 0c3e3da195
commit 90a5b4402b
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3 changed files with 28 additions and 1 deletions
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14
Lib/_pydecimal.py
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@ -6122,7 +6122,11 @@ def _convert_for_comparison(self, other, equality_op=False):
(?P<zeropad>0)?
(?P<minimumwidth>\d+)?
(?P<thousands_sep>[,_])?
(?:\.(?P<precision>\d+))?
(?:\.
(?=[\d,_]) # lookahead for digit or separator
(?P<precision>\d+)?
(?P<frac_separators>[,_])?
)?
(?P<type>[eEfFgGn%])?
\z
""", re.VERBOSE|re.DOTALL)
@ -6215,6 +6219,9 @@ def _parse_format_specifier(format_spec, _localeconv=None):
format_dict['grouping'] = [3, 0]
format_dict['decimal_point'] = '.'
if format_dict['frac_separators'] is None:
format_dict['frac_separators'] = ''
return format_dict
def _format_align(sign, body, spec):
@ -6334,6 +6341,11 @@ def _format_number(is_negative, intpart, fracpart, exp, spec):
sign = _format_sign(is_negative, spec)
frac_sep = spec['frac_separators']
if fracpart and frac_sep:
fracpart = frac_sep.join(fracpart[pos:pos + 3]
for pos in range(0, len(fracpart), 3))
if fracpart or spec['alt']:
fracpart = spec['decimal_point'] + fracpart