How to use the isbntools._initapp.conf.write function in isbntools

def mk_conf():
    global conf_file
    if conf_file == defaults_conf or not os.path.exists(_conf_file()):
        _mkpath(_conf_file())
        with open(_conf_file(), 'w') as f:
            conf.write(f)
            conf_file = f.name

def print_conf():
    """Print conf file."""
    if conf_file == defaults_conf:
        print("NO conf file! Using default builtins.")
        return
    print(("conf file at %s:" % conf_file))
    conf.write(sys.stdout)

def print_conf():
    if conf_file == defaults_conf:
        print("NO conf file! Using default builtins.")
        return
    print(("conf file at %s:" % conf_file))
    conf.write(sys.stdout)

def mk_conf():
    """Create con file."""
    global conf_file
    if conf_file == defaults_conf or not os.path.exists(_conf_file()):
        _mkpath(_conf_file())
        with open(_conf_file(), 'w') as f:
            conf.write(f)
            conf_file = f.name