inPlacePower method
python: a **= b; with modulus: a = pow(a, b, modulus) Python power, optionally with a modulus. An omitted modulus uses None.
Implementation
PyObject inPlacePower(PyObject exponent, [PyObject? modulus]) {
modulus ??= .borrowedConst(.none);
return .fromHandle(
checked(() => api.PyNumber_InPlacePower(ptr, exponent.ptr, modulus!.ptr)),
);
}