Function find_frozen

crates/vm/src/stdlib/_imp.rs:139–163

look_up_frozen + use_frozen in import.c

(name: &str, vm: &VirtualMachine)

// look_up_frozen + use_frozen in import.c
fn find_frozen(name: &str, vm: &VirtualMachine) -> Result<FrozenModule, FrozenError> {
    let frozen = vm
        .state
        .frozen
        .get(name)
        .copied()
        .ok_or(FrozenError::NotFound)?;

    // Bootstrap modules are always available regardless of override flag
    if matches!(
        name,
        "_frozen_importlib" | "_frozen_importlib_external" | "zipimport"
    ) {
        return Ok(frozen);
    }

    // use_frozen(): override > 0 → true, override < 0 → false, 0 → default (true)
    // When disabled, non-bootstrap modules are simply not found (same as look_up_frozen)
    let override_val = vm.state.override_frozen_modules.load();
    if override_val < 0 {
        return Err(FrozenError::NotFound);
    }

    Ok(frozen)
}

#[pymodule(with(lock))]
mod _imp {