List of videos

Alessandro Molina - Why storing files for the web is not as straightforward as you might think. [EuroPython 2015] [21 July 2015] [Bilbao, Euskadi, Spain] DEPOT ( http://depot.readthedocs.org/en/latest/ ) is a file storage framework born from the experience on a project that saved a lot of files on disk, until the day it went online and the customer system engineering team decided to switch to Heroku, which doesn't support storing files on disk. The talk will cover the facets of a feature "saving files" which has always been considered straightforward but that can become complex in the era of cloud deployment and when infrastructure migration happens. After exposing the major drawbacks and issues that big projects might face on short and long terms with file storage the talk will introduce DEPOT and how it tried to solve most of the issues while providing a super-easy-to-use interface for developers. We will see how to use DEPOT to provide attachments on SQLAlchemy or MongoDB and how to handle problems like migration to a different storage backend and long term evolution. Like SQLAlchemy makes possible to switch your storage on the fly without touching code, DEPOT aims at making so possible for files and even use multiple different storages together.

Bhaumik Shukla - Python for Cloud Services and Infrastructure Management [EuroPython 2015] [24 July 2015] [Bilbao, Euskadi, Spain] This talk is about how python is used in cloud computing as well as used while configuring cloud infrastructure. It also gives brief about tools and technologies/libraries can be used for number of tasks while cloud development/execution. Developers and all python lovers are the perfect audience for this talk. They will get the brief about reliable stack of python based tools used in cloud development and also will be sharing the experience with python. Summary: Python in cloud. Kind of services can be build with python. Python based tools used in deployment and configuration management for the cloud. For every python lovers - How to create a python friendly cloud infrastructure with great reliable combination of many stable tools. Stability. Experience sharing.

Stephan Jaensch - Building mobile APIs with services at Yelp [EuroPython 2015] [21 July 2015] [Bilbao, Euskadi, Spain] At Yelp, we ship code multiple times a day and have maintained this pace as our team has grown to 300+ and our codebase to several million lines of Python code. This talk explores the pain points we experienced along the ways, how our service-oriented architecture alleviates them, and the infrastructure we built to develop, test, and deploy in this highly-distributed environment. As a case study, we’ll be looking at the backend powering the new Yelp Business Owner Android and iOS apps. At the start, most of the development at Yelp occurred in a single, monolithic web application, creatively named “yelp-main” (naming is hard!). As the company grew, our developers were spending increasing amounts of time trying to ship code. After recognizing this pain point, we started experimenting with a service oriented architecture to scale the development process, and so far it’s been a resounding success. Over the course of the last three years, we’ve gone from writing our first service to having over seventy production services. Along the way, we’ve dabbled with Docker containers, Pyramid, SQLAlchemy, uWSGI, gevent, and virtualenv in an effort to build the next-generation service platform for our engineers.

Jan Pazdziora - External authentication for Django projects [EuroPython 2015] [24 July 2015] [Bilbao, Euskadi, Spain] When applications get deployed in enterprise environment or in large organizations, they need to support user accounts and groups that are managed externally, in existing directory services like FreeIPA or Active Directory, or federated via protocols like SAML. While it is possible to add support for these individual setups and protocols directly to application code or to Web frameworks or libraries, often it is better to delegate the authentication and identity operations to a frontend server and just assume that the application has to be able to consume results of the external authentication and identity lookups. In this talk, we will look at Django Web framework and how with few small changes to the framework and to the application we can extend the functionality of existing RemoteUserMiddleware and RemoteUserBackend to consume users coming from enterprise identity management systems. We will focus on using proven OS-level components such as SSSD for Web applications, but will also show setup using federation.

Alessio Siniscalchi - Citizen Science: Tracking Aliens with Python! [EuroPython 2015] [21 July 2015] [Bilbao, Euskadi, Spain] The talk discusses the challenges of implementing a Citizen Science Paradigm in a Python-centric platform, and the solutions devised for the System for observation and monitoring of Marine Alien Species, currently used by the italian Institute for Environmental Protection and Research (ISPRA). "Alien" Species means species introduced into a natural environment where they are not normally found. Topics includes strategies for crowd-friendly forms, work-flow definition for collected data, choice of the best technologies for its components: app for android devices, web application for citizens and experts, webGIS for data browsing and web services for data exporting.

oier etxaniz - Karakate magaletik EuroPythoneko tontorrera [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain] [Euskara] Orain dela urte batzuk asi genuen bidea azalduko dut, Python San Sebastian elkartea nola sotu genuen eta hortik pixkanaka pixkanaka nola sortzen joan den EuroPython sortzeko grina. Gendeari nahi izan eskero eta lan egin eskero EuroPython bezelako kongresu bat antolatzea posible dela erakustea du helburu hitzaldi honek.

Sarah Bird - Getting started with Bokeh / Let's build an interactive data visualization for the web..in Python! [EuroPython 2015] [20 July 2015] [Bilbao, Euskadi, Spain] Slides: [birdsarah.github.io/europython-2015-bokeh][1] As a web developer, I find myself being asked to make increasing numbers of data visualizations, interactive infographics, and more. d3.js is great, as are many other javascript toolkits that are out there. But if I can write more Python and less JavaScript... well, that makes me happy! Bokeh is a new Python library for interactive visualization. Its origins are in the data science community, but it has a lot to offer web developers. In this mini-tutorial, I'll run through how to build a data visualization in Bokeh and how to hook it into your web application. This will be a real-world example, that was previously built in d3.js. Along the way, I'll provide tips and tricks that I've discovered in my experience including how Bokeh works wonderfully with the iPython notebook which I use to prototype my visualizations, and many data science people use as their native way to explore data. For those of you who already know a little Bokeh, I'll be covering the new "actions framework" that lets you write JS callbacks in your python code so you can do lots of interactions all on the client side. [1]: http://birdsarah.github.io/europython-2015-bokeh/

Hitul Mistry - Python Multithreading and Multiprocessing: Concurrency and Parallelism [EuroPython 2015] [20 July 2015] [Bilbao, Euskadi, Spain] In this talk, people will get introduced to python threading and multiprocessing packages. This talk will cover multiprocessing/threaded development best practices, problems occurs in development, things to know before multiprocessing/multi-threading. After this talk attendees will be able to develop multiprocessing/threaded applications. This talk will cover threads, global interpreter lock, thread pool, processes, process pool, synchronization locks - Lock & RLock , semaphores, events, condition, timer, pipes, queue, shared memory. This talk will also cover best practices and problems in multiprocessing and threaded application development.

Tibor Arpas - Mashing up py.test, coverage.py and ast.py to take TDD to a new level [EuroPython 2015] [21 July 2015] [Bilbao, Euskadi, Spain] Users and developers especially, hate waiting. Computing has adapted and we almost never wait for the computer for more then 10 seconds. One big exception is runnig a test suite which takes MINUTES on many projects. That is incredibly distracting, frustrating and dragging the whole concept of automated tests down. I present a technique and a tool (py.test plugin called "testmon") which automatically selects only tests affected by recent changes. Does it sound too good to be true? Python developers rightfully have a suspecting attitude towards any tool which tries to be too clever about their source code. Code completion and symbol searching doesn't need to be 100% reliable but messing with the test suite execution? I show that we can cut test suite execution time significantly but maintain it's reliability.