Joe Amenta's Blog

I have finished the fixer for keyword-only parameters.  This includes things like this:

def spam(arg1, arg2, *, kw_only_arg1, kw_only_arg2): pass

The param list would fix to: (arg1, arg2, **_3to2kwargs), and the body of the function would immediately look for ‘kw_only_arg1′ and ‘kw_only_arg2′ in the _3to2kwargs dict, assign to their respective names, and delete the values from the dict.

Special considerations are made for when the *args and the **kwargs params exist.  Check the test cases for exactly what happens.

Note that this fixer is VERY sensitive to incorrect code, so as always, make sure that code actually works in Python 3 before running it through 3to2.

I’ve managed to get myself back to coding after an unexpectedly long absence.  I built up a lot of inertia over all that time, so I’m glad to finally overcome it.

I did hit a snag related to my laptop’s Ubuntu installation; this results in me not being able to run the 3to2 tests right now.  I’ll just commit what I have (the recent change probably does what I think it does, but it’s disabled by default so that it doesn’t bother anyone) and work through this tomorrow.  Shouldn’t take more than a few minutes when I’m fully awake, but I’ve learned from experience that I shouldn’t try to do significant sysadmin stuff this late at night if it’s not time-critical.