class RegexAssert:
    def __init__(self, pattern, flags=0):
        self._regex = re.compile(pattern, flags)

    def __eq__(self, actual):
        return bool(self._regex.match(actual))

    def __repr__(self):
        return self._regex.pattern

class OfType:
    """
    >>> 3 == OfType(int, str, bool)
    True
    >>> 'txt' == OfType(int)
    False
    """

    def __init__(self, *types):
        self.type = types

    def __eq__(self, other):
        return isinstance(other, self.type)