我對 Python 在傳遞給os.systemUbuntu 18.04 的命令中不轉(zhuǎn)義反斜杠感到困惑（在 CentOS 上運行良好）?？紤]這個程序：#!/usr/bin/env pythonimport osimport sysimport subprocessdef get_command(n):    return "echo 'Should be %d backslashes: %s'" % (n, "\\" * n)print("")print("Using os.system directly:")print("")for n in range(1, 5):    os.system(get_command(n))print("")print("Using subprocess.check_output:")print("")for n in range(1, 5):    sys.stdout.write(subprocess.check_output(get_command(n), shell=True).decode('utf-8'))print("")print("Writing the bash code to a script and using os.system on the script:")print("")for n in range(1, 5):    with open('/tmp/script.sh', 'w') as f:        f.write(get_command(n))    os.system('/bin/bash /tmp/script.sh')當(dāng)我在 Ubuntu 18.04 上運行它時，我得到了這個：Using os.system directly:Should be 1 backslashes: \Should be 2 backslashes: \Should be 3 backslashes: \\Should be 4 backslashes: \\Using subprocess.check_output:Should be 1 backslashes: \Should be 2 backslashes: \Should be 3 backslashes: \\Should be 4 backslashes: \\Writing the bash code to a script and using os.system on the script:Should be 1 backslashes: \Should be 2 backslashes: \\Should be 3 backslashes: \\\Should be 4 backslashes: \\\\請注意，它在應(yīng)該輸出兩個的地方輸出一個反斜杠，在應(yīng)該輸出三個或四個的地方輸出兩個反斜杠！但是，在我的 CentOS 7 機(jī)器上，一切都按預(yù)期工作。在兩臺機(jī)器上，外殼都是/bin/bash. 這是腳本的python2.7調(diào)用的strace輸出，以防萬一：https : //gist.githubusercontent.com/mbautin/a97cfb6f880860f5fe6ce1474b248cfd/raw我想從 Python 調(diào)用 shell 命令的最安全行為是將它們寫入臨時腳本文件！