List of videos

Eugene Amirov - Sustainable way of testing your code [EuroPython 2015] [20 July 2015] [Bilbao, Euskadi, Spain] How to write a test so you would remember what it does in a year from now? How to write selective tests with different inputs? What is test? How to subclass tests cases and yet maintain control on which tests would run? How to extend or to filter inputs used in parent classes? Are you a tiny bit intrigued now? :) This is not another talk about how to test, but how to organize your tests so they were maintainable. I will be using nose framework as an example, however main ideas should be applicable to any other framework you choose. Explaining how some parts of code works I would have to briefly touch some advanced python topics, although I will provide need-to-know basics there, so people with any level of python knowledge could enjoy the ride.

Honza Král - Beyond the basics with Elasticsearch [EuroPython 2015] [24 July 2015] [Bilbao, Euskadi, Spain] Elasticsearch has many use cases, some of them fairly obvious and widely used, like plain searching through documents or analytics. In this talk I would like to go through some of the more advanced scenarios we have seen in the wild. Some examples of what we will cover: Trend detection - how you can use the aggregation framework to go beyond simple "counting" and make use of the full-text properties of Elasticsearch. Percolator - percolator is reversed search and many people use it as such to drive alerts or "stored search" functionality for their website, let's look at how we can use it to detect languages, geo locations or drive live search. If we end up with some time to spare we can explore some other ideas about how we can utilize the features of a search engine to drive non- trivial data analysis including Geo-enabled search with relevancy.

Lynn Root - Metrics-driven development [EuroPython 2015] [20 July 2015] [Bilbao, Euskadi, Spain] At Spotify, my team struggled to be awesome. We had a very loose understanding of what product/service our squad was responsible for, and even less so of the expectations our internal and external customers had for those services. Other than “does our Facebook login work?”, we had no understanding of how our services we’re responsible for were doing. How many users actually sign up or log in with Facebook? How many users have connected their Spotify account with their Uber account? Do folks even use Spotify with Uber? With a 2-month challenge period, my squad and I focused inward to establish those unanswered questions and to establish feedback loops and always-on dashboards. This talk will tell the story of how we chose which metrics are important for us to focus on, what technologies we have used and are using, and how we’ve iterated over our feedback loops to fine-tune what metrics we care about.

Larry Hastings - Python's Infamous GIL [EuroPython 2015] [23 July 2015] [Bilbao, Euskadi, Spain] You've heard about Python's GIL. But what is it really? What does it do, both good and bad? Come learn all about the Python GIL. You'll learn about its history, all the problems it solves, all the problems it causes (that we know about!), and what it would take to remove the GIL. Attendees should be familiar with the terrors inherent in multithreaded programming, and be comfortable with a little C code in the slides.

Antony Lesuisse - Odoo the underdog python killer app. A python framework for web based business apps. [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain] Odoo is used by 2 millions of users, although relatively unknown in the python community, it has a vibrant community and is one of the most active python open source project. I will present you the Odoo framework and how it can help to be more productive when building web based business apps. I will highlight its advantages compared to more popular framework such as django.

Guido van Rossum - Type Hints for Python 3.5 [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain] PEP 484, "Type Hints", was accepted in time for inclusion in Python 3.5 beta 1. This introduces an optional standard for specifying types in function signatures. This concept was previously discussed as "optional static typing" and I similar to the way TypeScript adds optional type declarations to JavaScript. In this talk I will discuss the motivation for this work and show the key elements of the DSL for describing types (which, by the way is backward compatible with Python 3.2, 3.3 and 3.4). Note: *Python will remain a dynamically typed language, and I have no desire to ever make type hints mandatory, even by convention!*

Holger Krekel - Keynote: Towards a more effective, decentralized web [EuroPython 2015] [22 July 2015] [Bilbao, Euskadi, Spain] Many would like to see more decentralization but what does it mean, really? In this talk, I'll discuss the recent rise of immutable state concepts in languages and network protocols. And how the advent of hash-based data structures and replication strategies are shaking the client/server web service paradigm which rests on managing mutable state through http. By contrast, building on git, bittorrent and other content addressed data structures provides for a more secure, efficient decentralized communication topology. There are projects, thoughts and talk to create new web standards to bring such technologies to mass deployment and fuel a new wave of decentralization. What can Python bring to the table?

Juan Manuel Santos - Salting things up in the sysadmin's world [EuroPython 2015] [21 July 2015] [Bilbao, Euskadi, Spain] SaltStack is a thriving configuration management system written in Python that leverages YAML and Jinja2 which, by now, probably needs no introduction. This talk will cover a brief summary of why we need configuration management tools, followed by a full dive into SaltStack, its features, pros and cons, how to use it and how to extend it. By the end of this talk you will have gone from knowing little or nothing about SaltStack, to being able to deploy your own setup. This talk will be targeted to either seasoned Python developers who are taking their first steps in the system administration world, or established system administrators who secretly love Python and prefer to stay away of configuration management systems based on other languages. Its advisable that attendees have some familiarity with Python as well as with system administration concepts. Also, this presentation will be focused on GNU/Linux systems, so it is expected that attendees are comfortable with some of its concepts.

Michal Hořejšek - Testing web apps with Selenium [EuroPython 2015] [24 July 2015] [Bilbao, Euskadi, Spain] „Selenium automates browser.“ Selenium can be used as tool for testing web applications. At first it can be pretty hard to start testing with Selenium, but later on it can be even harder. I want to show you that it doesn't have to be true. That it can be easy, actually. But you have to know few things which you have to be careful about and that there is tool webdriverwrapper which can make it easy for you. I will speak about handling pages with JavaScript and which common problem can you have, how to run Selenium on servers without X server, how to deal with tabs, how to test with UnitTest or pytest, and how can webdriverwrapper make things easier for you and more.