helpers.py 文件源码

def is_color(string):
    """Checks if the given string is a valid color.

    Arguments:
    string -- the string to check
    """
    if string in NAMED_COLORS:
        return True
    if re.match(r"^#?[0-9a-f]{3}([0-9a-f]{3})?$", string, re.IGNORECASE):
        return True
    return False