Preface is an interactive programming and graphics framework for the Python programming language. Jonathan Feinberg created in 2010, basing his work on an existing programming framework called Processing, created by Casey Reas and Ben Fry in 2001. Casey and Ben were inspired by how simple it was to write interesting programs with the languages of their childhood (Logo and BASIC), and intended their framework to be a way to sketch (prototype) full-screen, interactive software without the frustration of languages typically used for this purpose at the time (C++ and Java).

When the Processing project was first created, it was intended to be a language-agnostic, arts-oriented approach to interactive programming, taking ...

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