Pyramid"Pay only for what you eat"

http://bit.ly/bcnmeetup-pyramid

Víctor Fernández de AlbaLead web developer at Barcelona Tech UniversityAuthor of Plone 3 Intranets (2010, PacktPub)Developing Plone sites since 2004Developing Pyramid applications since its early betas

- / Víctor's Blog @sneridagh

Brief historyPylons (2005-2010)

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repoze.bfg (2008-2010)

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Pyramid (2010- )

Joined under the same umbrella, the

TurboGears joined to the project few months later

Version 1.4 supports Python 2.6 ~ 3.x

Pylons Project

SimplicityAbout ~5000 lines of code

MinimalismTry to solve the fundamental problems

Mapping URLs to codeTemplatingSecurityServe static assets

DocumentationJust a word... awesome

Obsessively up-to-date

More than 800 printed pages

SpeedOptimized for fast code execution

Reliability100% obsessive tested

"If it ain’t tested, it’s broke"

and...Beautifuly pythonic

Pragmatism everywhere

Lots of: "Fuck, yeah!"

Heavy influence of ZopeChris McDonoughConfiguration via zcml (optional, not core)Component architecture (zope.component)ZODB (optional, not enforced)URL Traversal concept

Single file applicationfrom wsgiref.simple_server import make_serverfrom pyramid.config import Configuratorfrom pyramid.response import Response

def hello_world(request): return Response('Hello %(name)s!' % request.matchdict)

if __name__ == '__main__': config = Configurator() config.add_route('hello', '/hello/{name}') config.add_view(hello_world, route_name='hello') app = config.make_wsgi_app() server = make_server('0.0.0.0', 8080, app) server.serve_forever()

Application configurationDeclarative (previous example)Imperative (via decorators)

from pyramid.response import Responsefrom pyramid.view import view_config

@view_config(name='hello', request_method='GET')def hello(request): return Response('Hello')

Developer toolsSetuptools/Distribute compliantProject scaffoldingConvenience scriptsDebug toolbar

TemplatingChameleon (Zope Page Templates clone)MakoJinja2Virtually any other pythonic template system

PersistenceSQLAlchemy (OOTB)ZODB (OOTB)MongoDBVirtually any other persistence system or database

SecurityHigh level of granularityExtensiblePluggableLocal, LDAP, SQL, oAuth providers, etc.

MiscelaneousPastedeploy configurationi18nEvent systemHooksTweens conceptSession management

Cornice: A REST framework forPyramid

[..]from cornice import Service

info_desc = """This service is useful to get and set data for a user."""

user_info = Service(name='users', path='/{username}/info', description=info_desc)

_USERS = defaultdict(dict)

@user_info.get()def get_info(request): """Returns the public information about a **user**. If the user does not exists, returns an empty dataset. """ username = request.matchdict['username'] return _USERS[username]

Cornice: A REST framework forPyramid (II)

@user_info.post()def set_info(request): """Set the public information for a **user**. You have to be that user, and *authenticated*. Returns *True* or *False*. """ username = authenticated_userid(request) if request.matchdict["username"] != username: raise Forbidden() _USERS[username] = request.json_body return {'success': True}

Resourceshttp://docs.pylonsproject.org/http://cornice.readthedocs.org/https://github.com/pylons

Sorry for theconvenience