def get_filenames_request(products, download_directory):
    """Get local files url corresponding to a Copernicus request (must be already downloaded).

    :param products: (dict) Copernicus Hub query
    :param download_directory: (str) Url of folder for downloaded products
    :return: (list) List of strings with local urls for each product in the request
    """
    # list of id's per requested products
    ids_request = list(products.keys())

    # list of downloaded filenames urls
    filenames = [
        download_directory / f"{products[file_id]['title']}.nc"
        for file_id in ids_request
    ]

    return filenames