Constant Py_TPFLAGS_DISALLOW_INSTANTIATION
pub const Py_TPFLAGS_DISALLOW_INSTANTIATION: u64 = _; // 128u64Available on
Py_3_10 and crate feature tls only.pub const Py_TPFLAGS_DISALLOW_INSTANTIATION: u64 = _; // 128u64Py_3_10 and crate feature tls only.