cli.py 文件源码

def term_width():
    """ Try and get the terminal width """

    # Python 3.3 and newer
    if getattr(os, 'get_terminal_size', None) is not None:
        try:
            return os.get_terminal_size().columns
        except OSError:
            pass

    # No reliable/easy way on Windows in 3.2 and older
    if sys.platform == 'win32':
        return 80

    try:
        proc = subprocess.Popen(['tput cols'], shell=True, stdout=subprocess.PIPE)
        out = proc.communicate()
        if proc.wait() != 0:
            raise OSError
        return int(out[0])
    except OSError:
        return 80