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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _ip_is_usable(self, current_ip):
 """ Check if the current Tor's IP is usable. :argument current_ip: current Tor IP :type current_ip: str :returns bool """

        # Consider IP addresses only.
        try:
            ipaddress.ip_address(current_ip)
        except ValueError:
            return False

        # Never use real IP.
        if current_ip == self.real_ip:
            return False

        # Do dot allow IP reuse.
        if not self._ip_is_safe(current_ip):
            return False

        return True