import re


def isfullwidth(value):
    """
    Return whether or not given value contains any full-width chars.
    If the value contains any full-width chars, this function returns ``True``, otherwise ``False``.

    Examples::

        >>> isfullwidth('３ー０　ａ＠ｃｏｍ')
        True

        >>> isfullwidth('abc123')
        False

    :param value: string to validate full-width chars
    """
    full = re.compile(r"[^\u0020-\u007E\uFF61-\uFF9F\uFFA0-\uFFDC\uFFE8-\uFFEE0-9a-zA-Z]")
    return bool(full.match(value))