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10 Years of Python Libraries Armin “@mitsuhiko” Ronacher

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Who am I? { }

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Armin Ronacher Advisor and System Architect at Splash Damage / Fireteam Partner at Getsentry lucumr.pocoo.org/talks

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Where I come from { }

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Hermagor Carinthia; Austria ( )

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Population: 6952

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Computer Scientists: 0

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The Internet to the rescue

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h 2003 Discovered Python

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9 2004 ubuntuusers.de

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n 2005 Pocoo!

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D 2005 WTF is CGI?

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h 2006 Colubrid GPL Licensed!

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h 2007 Licensing

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9 2009 Flask

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h 20?? Many, many more

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n Now Open Source Consulting

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How to Succeed { }

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you can only build what you use

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you can only build what you understand

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you can only build what you love

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be critical

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restrict your API

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license it well

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The Thing with Using { }

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chicken and egg situation:

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not enough to use it after building;

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how do you use something that does not exist?

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Iteration

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M ockups

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Use the Repl

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Learn to Throw Away

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Systems > Solutions

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one trick pony

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Understanding { }

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this is the trickiest part

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especially if you build something new

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Data Flow Transformation &

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context matters

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w Love what you build { }

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how do you know you found love?

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enjoy using it? :) do you …

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what if you found new love?

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admit mistakes

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give it someone else

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being critical { }

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it's normal to learn

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you might hate what you did a year ago

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second system syndrome careful though:

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Restrict your API { }

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APIs are Contracts __________________

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Contracts Expensive are

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maintenance complicates

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it's okay to keep things private

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you can make them public later on

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license it well { }

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consider the consequences

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licenses are forever

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API Design Goals { }

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stateless

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layered

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consistent

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small

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abstraction leakage

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documentation thou shall write

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?