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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:

def _write_incron_lines(user, lines):
    '''
    Takes a list of lines to be committed to a user's incrontab and writes it
    '''
    if user == 'system':
        ret = {}
        ret['retcode'] = _write_file(_INCRON_SYSTEM_TAB, 'salt', ''.join(lines))
        return ret
    else:
        path = salt.utils.files.mkstemp()
        with salt.utils.files.fopen(path, 'wb') as fp_:
            fp_.writelines(salt.utils.data.encode(lines))
        if __grains__['os_family'] == 'Solaris' and user != "root":
            __salt__['cmd.run']('chown {0} {1}'.format(user, path), python_shell=False)
        ret = __salt__['cmd.run_all'](_get_incron_cmdstr(path), runas=user, python_shell=False)
        os.remove(path)
        return ret