gh-121797: Add class method Fraction.from_number() #121800
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It is an alternative constructor which only accepts a single numeric argument. Unlike to Fraction.from_float() and Fraction.from_decimal() it accepts any real numbers supported by the standard constructor (int, float, Decimal, Rational numbers).
Unlike to the standard constructor, it does not accept strings.
📚 Documentation preview 📚: https://cpython-previews--121800.org.readthedocs.build/