GoogleSprintPy3k

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Python 3000 Goals for the Google Sprint

The sprint is over

Thanks to all who participated! Here’s my blog with the report: http://www.artima.com/weblogs/viewpost.jsp?thread=173453

Below is the list of Py3k tasks we worked on (or wanted to work on) at the GoogleSprint.

Suggested Tasks

(We didn’t get to these.)

• Make IDLE work – there are relative import issues, perhaps others.

• When the I/O library is ready, start unifying str/unicode.

• Put back nb_ <true division> slots (regular and augmented)

• Make map() and filter() iterators and make them stop at the end of the shortest input (like zip()) instead of at the end of the longest input (like itertools?)

• See PEP 3100 for more ideas

Claimed Tasks

• Py3kConversionTools: Work on tool to help convert (flag keywords like with/as, removed functions/methods: apply/{}.iter*/{}.has_key/etc) (Jeremy Hylton)

• Work on the new I/O library (I have much interest in this but need help – Guido); you can check http://sebulba.wikispaces.com/project+iostack+v2 for a reference on what was generally agreed in the py3k list. (Hasan, Charles)

• Unify int/long (Martin von Löwis; see http://mail.python.org/pipermail/python-3000/2006-August/003046.html)

• Implement PEP 3102 (keyword-only arguments) (Jiwon Seo, Brett C.)

• Rewrite import in Python (Brett Cannon?, Alex Martelli?, Osvaldo Santana)

• Make xrange() support longs; then rename it to range() (see http://www.python.org/sf/1472639 for all but the supporting-long part) (Neal)

• Remove basestring.find and basestring.rfind, per PEP 3100 (done, Hasan – needs to be reviewed and checked in)

Finished Tasks

• Make zip() an iterator (like itertools.izip()) (done; Guido) (Brian too!)

• Clean up comparisons. Remove the ability to order objects where it doesn’t make sense. (Guido, Alex)

• Fix various unit tests that are currently failing in the p3yk branch (done, various sprinters).

• Rip out the last remains of coerce (done, Neal; need to rename nb_coerce slot)

• Make it so that [hash] can be set to None to declare an unhashable type, and to automatically do this the first time [eq] or [cmp] are overridden but [hash] is not (done, Guido & Alex)

• Rip out reduce() (done, John Reese and Jacques Frechet)

• Kill uses of has_key() in idlelib (done, John R & Jacques F).

• Get rid of all references to file() in favor of open(). (done, Anna)

• Rip out classic classes (done pre-sprint, Guido)