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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:
 async def browse(self, device):
 """ Launch file manager on the mount path of the specified device. :param device: device object, block device path or mount path :returns: whether the program was successfully launched. """

        device = self._find_device(device)
        if not device.is_mounted:
            self._log.error(_("not browsing {0}: not mounted", device))
            return False
        if not self._browser:
            self._log.error(_("not browsing {0}: no program", device))
            return False
        self._log.debug(_('opening {0} on {0.mount_paths[0]}', device))
        self._browser(device.mount_paths[0])
        self._log.info(_('opened {0} on {0.mount_paths[0]}', device))
        return True