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Features

  • Add a _depth and _category arguments to all of the venusian decorators. The _category argument can be used to affect which actions are registered when performing a config.scan(..., category=...) with a specific category. The _depth argument should be used when wrapping the decorator in your own. This change affects pyramid.view.view_config, pyramid.view.exception_view_config, pyramid.view.forbidden_view_config, pyramid.view.notfound_view_config, pyramid.events.subscriber and pyramid.response.response_adapter decorators. See Pylons#3105 and Pylons#3122
  • Fix the pyramid.request.Request class name after using set_property or config.add_request_method such that the str(request.__class__) would appear as pyramid.request.Request instead of pyramid.util.Request. See Pylons#3129
  • In cherrypy_server_runner, prefer imports from the cheroot package over the legacy imports from cherrypy.wsgiserver. See Pylons#3235
  • Add a context manager route_prefix_context to the pyramid.config.Configurator to allow for convenient setting of the route_prefix for include and add_route calls inside the context. See Pylons#3279
  • Modify the builtin session implementations to support SameSite options on cookies and set the default to 'Lax'. This affects pyramid.session.BaseCookieSessionFactory, pyramid.session.SignedCookieSessionFactory, and pyramid.session.UnencryptedCookieSessionFactoryConfig. See Pylons#3300
  • Modify pyramid.authentication.AuthTktAuthenticationPolicy and pyramid.csrf.CookieCSRFStoragePolicy to support the SameSite option on cookies and set the default to 'Lax'. See Pylons#3319
  • Added new pyramid.httpexceptions.HTTPPermanentRedirect exception/response object for a HTTP 308 redirect. See Pylons#3302
  • Within pshell, allow the user-defined setup function to be a generator, in which case it may wrap the command's lifecycle. See Pylons#3318
  • Within pshell, variables defined by the [pshell] settings are available within the user-defined setup function. See Pylons#3318
  • Add support for Python 3.7. Add testing on Python 3.8 with allowed failures. See Pylons#3333

Bug Fixes

  • Set appropriate code and title attributes on the HTTPClientError and HTTPServerError exception classes. This prevents inadvertently returning a 520 error code. See Pylons#3280
  • Replace webob.acceptparse.MIMEAccept from WebOb with webob.acceptparse.create_accept_header in the HTTP exception handling code. The old MIMEAccept has been deprecated. The new methods follow the RFC's more closely. See Pylons#3251
  • Catch extra errors like AttributeError when unpickling "trusted" session cookies with bad pickle data in them. This would occur when sharing a secret between projects that shouldn't actually share session cookies, like when reusing secrets between projects in development. See Pylons#3325

Deprecations

Backward Incompatibilities

  • On Python 3.4+ the repoze.lru dependency is dropped. If you were using this package directly in your apps you should make sure that you are depending on it directly within your project. See Pylons#3140
  • Remove the permission argument from pyramid.config.Configurator.add_route. This was an argument left over from a feature removed in Pyramid 1.5 and has had no effect since then. See Pylons#3299
  • Modify the builtin session implementations to set SameSite='Lax' on cookies. This affects pyramid.session.BaseCookieSessionFactory, pyramid.session.SignedCookieSessionFactory, and pyramid.session.UnencryptedCookieSessionFactoryConfig. See Pylons#3300
  • Variables defined in the [pshell] section of the settings will no longer override those set by the setup function. See Pylons#3318
  • pyramid.config.Configurator.add_notfound_view uses default redirect class exception pyramid.httpexceptions.HTTPTemporaryRedirect instead of previous pyramid.httpexceptions.HTTPFound. See Pylons#3328

Documentation Changes