Function is_stdlib_module_name

crates/vm/src/import.rs:352–366

Check if a module name is in sys.stdlib_module_names. Takes the original __name__ object to preserve str subclass behavior. Propagates errors (e.g. TypeError for unhashable str subclass).

(name: &PyObjectRef, vm: &VirtualMachine)

/// Takes the original __name__ object to preserve str subclass behavior.
/// Propagates errors (e.g. TypeError for unhashable str subclass).
pub(crate) fn is_stdlib_module_name(name: &PyObjectRef, vm: &VirtualMachine) -> PyResult<bool> {
    let stdlib_names = match vm.sys_module.get_attr("stdlib_module_names", vm) {
        Ok(names) => names,
        Err(_) => return Ok(false),
    };
    if !stdlib_names.class().fast_issubclass(vm.ctx.types.set_type)
        && !stdlib_names
            .class()
            .fast_issubclass(vm.ctx.types.frozenset_type)
    {
        return Ok(false);
    }
    let result = vm.call_method(&stdlib_names, "__contains__", (name.clone(),))?;
    result.try_to_bool(vm)
}

/// PyImport_ImportModuleLevelObject
pub(crate) fn import_module_level(