TypeError: expected str, bytes or os.PathLike object, not int in - subprocess

Question

我正在使用音频编解码器并尝试压缩音频文件。为此，Linux 命令是

opusenc --bitrate 16 input_file.wav output_file.opus

现在运行这个命令我正在使用子进程，我的代码是

import subprocess
wav_file_path = '/home/mds-student/Documents/aDITYA/IEMOCAP/Ses01F_impro01.wav'
file_name = wav_file_path.split('.')[0]
file_name = os.path.basename(file_name)
bitrate = 16
cmd = ['opusenc', '--bitrate',bitrate ,wav_file_path, file_name, '.opus']
print(cmd)
subprocess.call(cmd)

这会引发错误

Traceback (most recent call last):
  File "src/9_opus_conversion_files.py", line 78, in <module>
    subprocess.call(cmd)
  File "/home/mds-student/anaconda3/envs/venv/lib/python3.6/subprocess.py", line 729, in __init__
    restore_signals, start_new_session)
  File "/home/mds-student/anaconda3/envs/venv/lib/python3.6/subprocess.py", line 1295, in _execute_child
    restore_signals, start_new_session, preexec_fn)
TypeError: expected str, bytes or os.PathLike object, not int

我做错了什么？

Answer 1

cmd 列表中的所有值在传递给 subprocess.call 之前应转换为字符串。

bitrate = 16是一个整数，这就是错误发生的原因。