Django management command with quoted argument

Context

I'm trying to run:

zappa manage production 'shell -c "from django.contrib.auth import get_user_model; get_user_model().objects.create_superuser(username=\"admin\", password=\"changeme\")"'

Expected Behavior

It will invoke a command that is equivalent to:

manage.py shell -c "from django.contrib.auth import get_user_model; get_user_model().objects.create_superuser(username=\"admin\", password=\"changeme\")"

Actual Behavior

[START] RequestId: edf0eeda-879e-41ca-8595-e51a0adaee17 Version: $LATEST
[ERROR] CommandError: Error: unrecognized arguments: django.contrib.auth import get_user_model; get_user_model().objects.create_superuser(username="admin", password="changeme")\'
Traceback (most recent call last):
  File "/tmp/project/sentry_sdk/integrations/aws_lambda.py", line 57, in sentry_handler
    reraise(*exc_info)
  File "/tmp/project/sentry_sdk/_compat.py", line 57, in reraise
    raise value
  File "/tmp/project/sentry_sdk/integrations/aws_lambda.py", line 48, in sentry_handler
    return handler(event, context, *args, **kwargs)
  File "/var/task/handler.py", line 609, in lambda_handler
    return LambdaHandler.lambda_handler(event, context)
  File "/var/task/handler.py", line 243, in lambda_handler
    return handler.handler(event, context)
  File "/var/task/handler.py", line 408, in handler
    management.call_command(*event['manage'].split(' '))
  File "/tmp/project/django/core/management/__init__.py", line 147, in call_command
    defaults = parser.parse_args(args=parse_args)
  File "/tmp/project/django/core/management/base.py", line 55, in parse_args
    return super().parse_args(args, namespace)
  File "/var/lang/lib/python3.7/argparse.py", line 1758, in parse_args
    self.error(msg % ' '.join(argv))
  File "/tmp/project/django/core/management/base.py", line 61, in error
    raise CommandError("Error: %s" % message)

Possible Fix

I suspect the issue is here: https://github.com/Miserlou/Zappa/blob/0c8d99ddbc297124d93c166652013abba50ee86e/zappa/handler.py#L408

The code is simply splitting arguments by spaces where shlex.split might be more appropriate.

>>> manage = 'shell -c "from django.contrib.auth import get_user_model; get_user_model().objects.create_superuser(username=\\"admin\\", password=\\"changeme\\")"'
>>> manage.split(" ")
['shell', '-c', '"from', 'django.contrib.auth', 'import', 'get_user_model;', 'get_user_model().objects.create_superuser(username=\\"admin\\",', 'password=\\"changeme\\")"']
>>> import shlex
>>> shlex.split(manage)
['shell', '-c', 'from django.contrib.auth import get_user_model; get_user_model().objects.create_superuser(username="admin", password="changeme")']

Your Environment

• Zappa version used: 0.51.0

• Operating System and Python version: MacOS Python3.7

• The output of pip freeze:

  appnope==0.1.0
  argcomplete==1.12.0
  asgiref==3.2.10
  backcall==0.2.0
  boto==2.39.0
  boto3==1.14.25
  botocore==1.17.25
  certifi==2020.6.20
  cffi==1.14.0
  cfn-flip==1.2.3
  chardet==3.0.4
  click==7.1.2
  cryptography==3.0
  decorator==4.4.2
  dj-database-url==0.5.0
  Django==3.0.8
  django-storages==1.9.1
  docutils==0.15.2
  durationpy==0.5
  filechunkio==1.6
  future==0.18.2
  futures==3.0.4
  goodconf==1.0.0
  hjson==3.0.1
  idna==2.10
  importlib-metadata==1.7.0
  ipykernel==5.3.3
  ipython==7.16.1
  ipython-genutils==0.2.0
  jedi==0.17.2
  jmespath==0.10.0
  jupyter-client==6.1.6
  jupyter-core==4.6.3
  kappa==0.6.0
  lxml==4.5.2
  nose==1.3.7
  ntlm-auth==1.5.0
  numpy==1.19.1
  pandas==1.0.5
  parso==0.7.0
  pexpect==4.8.0
  pickleshare==0.7.5
  pip-tools==5.2.1
  placebo==0.9.0
  prompt-toolkit==3.0.5
  psycopg2-binary==2.8.5
  ptyprocess==0.6.0
  pycparser==2.20
  Pygments==2.6.1
  python-dateutil==2.6.1
  python-slugify==4.0.1
  pytz==2020.1
  PyYAML==5.3.1
  pyzmq==19.0.1
  requests==2.24.0
  requests-ntlm==1.1.0
  requests-toolbelt==0.9.1
  ruamel.yaml==0.16.10
  ruamel.yaml.clib==0.2.0
  s3transfer==0.3.3
  sentry-sdk==0.16.1
  SharePlum==0.5.1
  six==1.15.0
  sqlparse==0.3.1
  text-unidecode==1.3
  toml==0.10.1
  tornado==6.0.4
  tqdm==4.48.0
  traitlets==4.3.3
  troposphere==2.6.2
  urllib3==1.25.9
  wcwidth==0.2.5
  Werkzeug==0.16.1
  whitenoise==5.1.0
  wsgi-request-logger==0.4.6
  xlrd==1.2.0
  zappa==0.51.0
  zipp==3.1.0
  

• Link to your project (optional):

• Your zappa_settings.json:

  {
      "production": {
          "aws_region": "us-west-2",
          "django_settings": "project.settings",
          "exclude": ["project.yml"],
          "project_name": "project",
          "runtime": "python3.7",
          "s3_bucket": "project",
          "manage_roles": false,
          "keep_warm": false,
          "role_arn": "arn:aws:iam::xxxx:role/service-role/project-lambda-service",
          "route53_enabled": false,
          "domain": "project.example.com",
          "async_resources": false,
          "apigateway_enabled": false,
          "lambda_description": "my project",
          "slim_handler": true,
          "memory_size": 256,
          "timeout_seconds": 300,
          "log_level": "INFO"
      }
  }
  ```
  

Start at zappa/handler.py around the management command entry point identified at line 408, then reproduce the quoted Django command from the issue. Check how the command string is split before dispatch; done means quoted arguments reach Django as single arguments and the shown command executes without the unrecognized-arguments error.