Check if the provided version matches the constraints.

        :param version: The version to match against this instance.
        :type version: String or :class:`Version` instance.

def match(self, version):
        """
        Check if the provided version matches the constraints.

        :param version: The version to match against this instance.
        :type version: String or :class:`Version` instance.
        """
        if isinstance(version, string_types):
            version = self.version_class(version)
        for operator, constraint, prefix in self._parts:
            f = self._operators.get(operator)
            if isinstance(f, string_types):
                f = getattr(self, f)
            if not f:
                msg = ('%r not implemented '
                       'for %s' % (operator, self.__class__.__name__))
                raise NotImplementedError(msg)
            if not f(version, constraint, prefix):
                return False
        return True