def hex2rgb()

in chartify/_core/colour.py [0:0]

• 12 lines of code
• 5 McCabe index (conditional complexity)

def hex2rgb(str_rgb):
    """Transform hex RGB representation to RGB tuple

    :param str_rgb: 3 hex char or 6 hex char string representation
    :rtype: RGB 3-uple of float between 0 and 1

    >>> from colour import hex2rgb

    >>> hex2rgb('#00ff00')
    (0.0, 1.0, 0.0)

    >>> hex2rgb('#0f0')
    (0.0, 1.0, 0.0)

    >>> hex2rgb('#aaa')  # doctest: +ELLIPSIS
    (0.66..., 0.66..., 0.66...)

    >>> hex2rgb('#aa')  # doctest: +ELLIPSIS
    Traceback (most recent call last):
    ...
    ValueError: Invalid value '#aa' provided for rgb color.

    """

    try:
        rgb = str_rgb[1:]

        if len(rgb) == 6:
            r, g, b = rgb[0:2], rgb[2:4], rgb[4:6]
        elif len(rgb) == 3:
            r, g, b = rgb[0] * 2, rgb[1] * 2, rgb[2] * 2
        else:
            raise ValueError()
    except Exception:
        raise ValueError("Invalid value %r provided for rgb color." % str_rgb)

    return tuple([float(int(v, 16)) / 255 for v in (r, g, b)])