We’re pleased to announce the availability of Mu 1.0.0-beta.17,
a Python code editor for beginner programmers!
This is the final beta version before a release candidate later this week and
the final 1.0 release sometime next week. This version is feature complete for
1.0. Any further changes will be bug fixes or cosmetic changes rather than new
features.

The full list of changes can be read in the developer documentation.
However, highlights include:

  • A major re-write of how MicroPython code is flashed onto the BBC micro:bit.
    If there’s one thing we’d love to be tested by users, it’s this! All
    feedback most welcome (submit a new issue if you find a problem
    or discuss things via online chat).
  • The latest and greatest version of MicroPython
    for the BBC micro:bit.
  • Updates to the Python visual debugger (which is working really well).
  • Protection from “shadow modules”. When many new programmers first save, for
    example, some
    turtle based code they call their file turtle.py. This breaks Python in
    a subtle yet opaque manner for beginners. Of course, their new turtle.py file
    takes precedence in the import path, so where their code says import turtle
    it is, in fact, trying to import itself..! Not a good situation for anyone,
    let alone a beginner programmer. As a result, will complain if you try to
    give a file the same name as an existing module on your Python path. We
    know from extensive feedback this feature will save hours of confused
    head-scratching for beginners and teachers.
  • We’ve also added a very simple yet remarkably useful “find and replace”
    dialog which you can access with the Ctrl-F hot key combination.
  • Talking of hot key combinations, if you highlight some text and press
    Ctrl-K it’ll be toggled between commented and uncommented. If no text is
    highlighted, the current line is toggled between these two states.
  • Mu has been updated to use the latest version of Qt as its GUI framework.
  • Plenty of minor fixes, tidy-ups and bugs squashed.

The next release will be a bug-fix “release candidate”. This will be a
dress rehearsal for the final release which will follow soon after. Happily,
most of Mu’s test, build and package infrastructure is automated. However,
since this is still a process with several different components that need to be
synchronised and checked (such as blog posts the release and documentation
updates) and some manual interventions (such as digitally signing the
installers for OSX and Windows) we want to make sure we get this process right
first time!

As always, feedback, bug reports and ideas would be most welcome!



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