[3.13] gh-152157: Reject empty fractions in _datetime.{date}time.fromisoformat (GH-152161) - #152766

[3.13] gh-152157: Reject empty fractions in _datetime.{date}time.fromisoformat (GH-152161)#152766

StanFromIreland merged 3 commits into

python:3.13python/cpython:3.13from

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