Constant Py_TPFLAGS_LONG_SUBCLASS
pub const Py_TPFLAGS_LONG_SUBCLASS: u64 = _; // 16_777_216u64Available on crate features
dep_pyo3 and std only.pub const Py_TPFLAGS_LONG_SUBCLASS: u64 = _; // 16_777_216u64dep_pyo3 and std only.