Python TypeError: write() argument must be str, not bytes 问题

Question

python 3.9.12
TypeError: write() argument must be str, not bytes

def RunProc(*args, **kwargs):
    stdin = kwargs.pop("stdin", "")
    p = subprocess.Popen(args, stdout = subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)

    stdout, stderr = p.communicate(stdin)

    if p.returncode == 0:
        if stderr:
            sys.stderr.write(stderr)
        return stdout
    else:
        sys.stderr.write(stderr)
        sys.stdout.write(stdout)
        sys.exit(1)

运行结果及报错内容

TypeError: write() argument must be str, not bytes

Answer 1

sys.stderr.write(stderr)

改为

sys.stderr.write(stderr.decode())