Source code for imgwrench.commands.blackwhite

"""Convert color images to black and white."""

import click


def blackwhite(image):
    """Convert color images to black and white."""
    return image.convert("L")


@click.command(name="blackwhite")
def cli_blackwhite():
    """Convert color images to black and white."""
    click.echo("Initializing blackwhite with parameters {}".format(locals()))

    def _blackwhite(images):
        for info, image in images:
            yield info, blackwhite(image)

    return _blackwhite