Function ssizeargfunc 

pub unsafe extern "C" fn ssizeargfunc<Meth: MethodDef<Func>>(
    arg1: *mut PyObject,
    arg2: Py_ssize_t,
) -> *mut PyObject

External symbol called by Python, which calls the provided Rust function.

The Rust function is supplied via the generic parameter Meth.

Safety

The interpreter must be attached