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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 write_config(self, cfg, slot=1):
 """ Write a configuration to the YubiKey. """

        cfg_req_ver = cfg.version_required()
        if cfg_req_ver > self.version_num():
            raise yubikey_base.YubiKeyVersionError('Configuration requires YubiKey version %i.%i (this is %s)' % \
                                                  (cfg_req_ver[0], cfg_req_ver[1], self.version()))
        if not self.capabilities.have_configuration_slot(slot):
            raise YubiKeyUSBHIDError("Can't write configuration to slot %i" % (slot))
        return self._device._write_config(cfg, slot)