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modernize v0.4 Release Notes

  • 🚀 Released 2014-10-14.

    • 📚 Documentation_ has been added.
    • All fixers are now idempotent, which allows modernize to safely be applied more than once to the same source code.
    • 0️⃣ The option to include default fixers when -f options are used is now spelled -f default, rather than -f all.
    • ➕ Added a --version option to the modernize command.
    • Calls to zip, map, and filter are now wrapped with list() in non-iterator contexts, to preserve Python 2 semantics.
    • 👌 Improved fixer for xrange using six.moves.range.
    • Simplified use of six.with_metaclass for classes with more than one base class.
    • 🆕 New fixer for imports of renamed standard library modules, using six.moves.
    • New fixer to add from __future__ import absolute_import to all files with imports, and change any implicit relative imports to explicit (see PEP 328).
    • 🆕 New fixer for input() and raw_input(), changed to eval(input()) and input() respectively.
    • 🆕 New fixer for file(), changed to open(). There is also an opt-in fixer that changes both of these to io.open().
    • 🆕 New fixer for (int, long) or (long, int), changed to six.integer_types. Other references to long are changed to int.
    • 🆕 New fixer for basestring, changed to six.string_types.
    • 🆕 New fixer for unicode, changed to six.text_type.
    • The fix_next fixer uses the next() builtin rather than six.advance_iterator.
    • ✅ There is test coverage for all libmodernize fixers.
    • Simplified the implementation of many libmodernize fixers by extending similar fixers from lib2to3.
    • Fixed a bug where fix_raise_six was adding an incorrect import statement.
    • 👌 Support for targeting Python 2.5 or lower has been officially dropped. (Previously some fixers did output constructs that were only added in Python 2.6, such as the except ... as construct, but this was not documented.)

    📚 .. _Documentation: https://modernize.readthedocs.org/en/latest/