为什么pyramid_celery需要引导金字塔WSGI应用程序？

Question

为什么pyramid_celery使用给定的PasteDeploy配置文件引导金字塔WSGI应用程序并且不使用返回的环境？这次电话的目的是什么？

pyramid_celery@Github - source code line using pyramid.paster.bootstrap

from pyramid.paster import bootstrap
from celery.app import default_app


class CommandMixin(object):
    preload_options = ()

    def setup_app_from_commandline(self, argv):
        if len(argv) < 2:
            print >> sys.stderr, 'No configuration file specified.'
            sys.exit(1)
        bootstrap(argv[1])
        self.app = default_app
        return argv[:1] + argv[2:]

参考

• pyramid.paster.bootstrap

关于用例引导WSGI应用程序的金字塔文档

• Writing a script
• Making Your Script into a Console Script