# cpl.application — Common Python Library documentation

# cpl.application

## cpl.application.application_abc

class `cpl.application.application_abc.``ApplicationABC`(config: cpl.configuration.configuration_abc.ConfigurationABC, services: cpl.dependency_injection.service_provider_abc.ServiceProviderABC )

  Bases: `abc.ABC`

  ABC for the Application class

  > config: `cpl.configuration.configuration_abc.ConfigurationABC`

  >   Contains object loaded from appsettings

  > services: `cpl.dependency_injection.service_provider_abc.ServiceProviderABC`

  >   Contains instances of prepared objects

  abstract `configure`()

    Configure the application

    Called by `cpl.application.application_abc.ApplicationABC.run`

  abstract `main`()

    Custom entry point

    Called by `cpl.application.application_abc.ApplicationABC.run`

  `run`()

    Entry point

    Called by custom Application.main

## cpl.application.application_builder

class `cpl.application.application_builder.``ApplicationBuilder`(app: Type[ cpl.application.application_abc.ApplicationABC ])

  Bases: `cpl.application.application_builder_abc.ApplicationBuilderABC`

  This is class is used to build a object of `cpl.application.application_abc.ApplicationABC`

  > app: Type[`cpl.application.application_abc.ApplicationABC`]

  >   Application to build

  `build`() → cpl.application.application_abc.ApplicationABC

    Creates custom application object

    > Object of `cpl.application.application_abc.ApplicationABC`

  `use_startup`(startup: Type[ cpl.application.startup_abc.StartupABC ])

    Sets the custom startup class to use

    > startup: Type[`cpl.application.startup_abc.StartupABC`]

    >   Startup class to use

## cpl.application.application_builder_abc

class `cpl.application.application_builder_abc.``ApplicationBuilderABC`(*args)

  Bases: `abc.ABC`

  ABC for the `cpl.application.application_builder.ApplicationBuilder`

  abstract `build`() → cpl.application.application_abc.ApplicationABC

    Creates custom application object

    > Object of `cpl.application.application_abc.ApplicationABC`

  abstract `use_startup`(startup: Type[ cpl.application.startup_abc.StartupABC ])

    Sets the custom startup class to use

    > startup: Type[`cpl.application.startup_abc.StartupABC`]

    >   Startup class to use

## cpl.application.startup_abc

class `cpl.application.startup_abc.``StartupABC`(*args)

  Bases: `abc.ABC`

  ABC for the startup class

  abstract `configure_configuration`() → cpl.configuration.configuration_abc.ConfigurationABC

    Creates configuration of application

    > Object of `cpl.configuration.configuration_abc.ConfigurationABC`

  abstract `configure_services`() → cpl.dependency_injection.service_provider_abc.ServiceProviderABC

    Creates service provider

    > Object of `cpl.dependency_injection.service_provider_abc.ServiceProviderABC`