Function _check_pil_jpeg_bytes

tests/test_pylabtools.py:45–57

Skip if PIL can't write JPEGs to BytesIO objects

()

def _check_pil_jpeg_bytes():
    """Skip if PIL can't write JPEGs to BytesIO objects"""
    # PIL's JPEG plugin can't write to BytesIO objects
    # Pillow fixes this
    from PIL import Image

    buf = BytesIO()
    img = Image.new("RGB", (4, 4))
    try:
        img.save(buf, "jpeg")
    except Exception as e:
        ename = e.__class__.__name__
        raise pytest.skip("PIL can't write JPEG to BytesIO: %s: %s" % (ename, e)) from e


@dec.skip_without("PIL.Image")