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bpo-44258: support PEP 515 for Fraction's initialization from string #26422

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Merged
mdickinson merged 11 commits into from
Jun 7, 2021
Merged

bpo-44258: support PEP 515 for Fraction's initialization from string #26422

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aa8249a
bpo-44258: support PEP 515 for Fraction's initialization from string
skirpichev May 28, 2021
8c96355
regexps's version
skirpichev May 28, 2021
8c62c64
Merge branch 'main' into fix-44258
skirpichev May 29, 2021
38b16a9
A different regexps version, which doesn't suffer from catastrophic b…
skirpichev May 29, 2021
b131e51
Merge branch 'main' into fix-44258
skirpichev May 30, 2021
db9652e
revert denom -> den
skirpichev May 30, 2021
6336aef
strip "_" from the decimal str, add few tests
skirpichev May 30, 2021
b11ef1e
drop redundant tests
skirpichev May 30, 2021
5f7e32a
Add versionchanged & whatsnew entry
skirpichev May 30, 2021
983b67d
Amend Fraction constructor docs
skirpichev May 30, 2021
076b396
Change .. versionchanged:...
skirpichev May 31, 2021
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revert denom -> den
  • Loading branch information
@skirpichev
skirpichev committed May 30, 2021
commit db9652ebe3a1a2971d0a90c3e3f2193822a8f228
8 changes: 4 additions & 4 deletions Lib/fractions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@
(?=\d|\.\d) # lookahead for digit or .digit
(?P<num>\d*|\d+(_\d+)*) # numerator (possibly empty)
(?: # followed by
(?:/(?P<den>\d+(_\d+)*))? # an optional denominator
(?:/(?P<denom>\d+(_\d+)*))? # an optional denominator
| # or
(?:\.(?P<decimal>d*|\d+(_\d+)*))? # an optional fractional part
(?:E(?P<exp>[-+]?\d+(_\d+)*))? # and optional exponent
Expand Down Expand Up @@ -115,9 +115,9 @@ def __new__(cls, numerator=0, denominator=None, *, _normalize=True):
raise ValueError('Invalid literal for Fraction: %r' %
numerator)
numerator = int(m.group('num') or '0')
denominator = m.group('den')
if denominator:
denominator = int(denominator)
denom = m.group('denom')
if denom:
denominator = int(denom)
else:
denominator = 1
decimal = m.group('decimal')
Expand Down