1.19 (2024-11-29) ----------------- * Support for Python 2.7 as well as 3.7 and earlier has been removed. * Generally use ``.as_integer_ratio()`` in the constructor if available. https://github.com/python/cpython/pull/120271 * Add a classmethod ``.from_number()`` that requires a number argument, not a string. https://github.com/python/cpython/pull/121800 * Mixed calculations with other ``Rational`` classes could return the wrong type. https://github.com/python/cpython/issues/119189 * In mixed calculations with ``complex``, the Fraction is now converted to ``float`` instead of ``complex`` to avoid certain corner cases in complex calculation. https://github.com/python/cpython/pull/119839 * Using ``complex`` numbers in division shows better tracebacks. https://github.com/python/cpython/pull/102842 * Subclass instantiations and calculations could fail in some cases.