AWS 将 Django 站点从 Python 2.7 升级到 3.6

Question

我有一个使用 Django1.11 和 Python 2.7 在 AWS 上运行的 Django 项目。

我正在将它升级到 Django 2.2 和 Python 3.6

我让它在本地运行并且所有测试都通过了。我不想将它加载到 AWS elasticbeanstalk 实例上。

当我执行eb deploy 时，我在 eb 活动日志中收到以下错误

[2019-10-10T14:06:38.123Z] INFO  [19195] - [Application update app-1cfe-191010_140828@14/AppDeployStage0/AppDeployPreHook/03deploy.py] : Activity execution failed, because: Traceback (most recent call last):
    File "/opt/python/run/venv/bin/pip", line 4, in <module>
      import re
    File "/opt/python/run/venv/lib64/python3.6/re.py", line 142, in <module>
      class RegexFlag(enum.IntFlag):
  AttributeError: module 'enum' has no attribute 'IntFlag'
  2019-10-10 14:06:38,116 ERROR    Error installing dependencies: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 1
  Traceback (most recent call last):
    File "/opt/elasticbeanstalk/hooks/appdeploy/pre/03deploy.py", line 22, in main
      install_dependencies()
    File "/opt/elasticbeanstalk/hooks/appdeploy/pre/03deploy.py", line 18, in install_dependencies
      check_call('%s install -r %s' % (os.path.join(APP_VIRTUAL_ENV, 'bin', 'pip'), requirements_file), shell=True)
    File "/usr/lib64/python2.7/subprocess.py", line 190, in check_call
      raise CalledProcessError(retcode, cmd)
  CalledProcessError: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 1 (ElasticBeanstalk::ExternalInvocationError)
caused by: Traceback (most recent call last):
    File "/opt/python/run/venv/bin/pip", line 4, in <module>
      import re
    File "/opt/python/run/venv/lib64/python3.6/re.py", line 142, in <module>
      class RegexFlag(enum.IntFlag):
  AttributeError: module 'enum' has no attribute 'IntFlag'
  2019-10-10 14:06:38,116 ERROR    Error installing dependencies: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 1
  Traceback (most recent call last):
    File "/opt/elasticbeanstalk/hooks/appdeploy/pre/03deploy.py", line 22, in main
      install_dependencies()
    File "/opt/elasticbeanstalk/hooks/appdeploy/pre/03deploy.py", line 18, in install_dependencies
      check_call('%s install -r %s' % (os.path.join(APP_VIRTUAL_ENV, 'bin', 'pip'), requirements_file), shell=True)
    File "/usr/lib64/python2.7/subprocess.py", line 190, in check_call
      raise CalledProcessError(retcode, cmd)
  CalledProcessError: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 1 (Executor::NonZeroExitStatus)

Python2.7 版本使用的是我已删除/卸载的 enum34（在 requirements.txt 中），所以我认为这不是问题。

我也不明白为什么我收到File "/usr/lib64/python2.7/subprocess.py", line 190, in check_call raise CalledProcessError(retcode, cmd) 这条线。为什么要尝试使用 Python2.7 - 我没有修改我应该修改的内容？ 有人可以帮忙吗？

注意

虽然这是相同的错误Why Python 3.6.1 throws AttributeError: module 'enum' has no attribute 'IntFlag'?，但它并不能帮助我通过eb deploy 进程在 AWS 上解决

Answer 1

问题似乎是我正在通过控制台更改环境变量（例如设置 wsgi.py），而我需要离开部署来管理它并只需设置数据库设置