django命令包含双引号和空格的Python子进程

Question

我正在使用这个node plugin来运行django管理命令。

如果我直接执行该命令，它可以工作：

sls wsgi manage local -c "check --list-tags"

如果我调用作为子进程调用它的python脚本，它找不到命令：

import subprocess
proc = subprocess.Popen(['sls', 'wsgi', 'manage', 'local', '-c', '"check --list-tags"'])
(out, err) = proc.communicate()


"Traceback (most recent call last):\n  File \"/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py\", line 102, in call_command\n    app_name = get_commands()[command_name]\nKeyError: 'check --list-tags'\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"./wsgi_handl
    er.py\", line 89, in handler\n    management.call_command(*shlex.split(meta.get(\"data\", \"\")))\n  File \"/usr/local/lib/python3.6/site-packages/django/core/management/__init__.py\", line 104, in call_command\n    raise CommandError(\"Unknown command: %r\" % command_name)\ndjango.core.management.base.CommandError: Unknown command: 'check --list-tags'\n
    "

如果我执行一个不包含任何空格的命令，它可以工作，例如：

subprocess.Popen(['sls', 'wsgi', 'manage', 'local', '-c', '"makemigrations"'])

Answer 1

如果使用shell=True，您可以将完整的命令作为字符串传递，尝试一下，稍后再对其进行优化

proc = subprocess.Popen(
    'sls wsgi manage local -c "check --list-tags"',
    shell=True,
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE,
)