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Comment: note on b'' and unicode_literals
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| To see a summary of our current position on Python 3 support, see SupportedPythonVersions#Python_3.x_support. | |
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| This is a status page for keeping track of what needs to be done to make progress on Mercurial on Python 3. | |
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| To see a summary of our current position on Python 3 support, see [[SupportedPythonVersions#Python_3.x_support]]. This is a status page for keeping track of what needs to be done to make progress on Mercurial on Python 3. Nobody is actively working on this - AugieFackler works on it sporadically, and would be happy to see patches on this topic flagged with Py3 on the mailing list. The work in progress is visible at http://hg.durin42.com/hg-py3k/ - note that ChangesetEvolution is in use on that repository, and so hashes will change over time as the patchset is rebased. The most significant problem at the moment is some lingering cyclic imports in the codebase: ==== mercurial.repoview -> mercurial.revset -> mercurial.repoview ==== |
Nobody is actively working on this - AugieFackler works on it sporadically, and would be happy to see patches on this topic flagged with Py3 on the mailing list. The work in progress is visible at http://hg.durin42.com/hg-py3k/ - note that ChangesetEvolution is in use on that repository, and so hashes will change over time as the patchset is rebased. |
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| run-tests.py can pass its own tests (test-run-tests.py and test-run-tests.t) under 2.6, 2.7 and 3.5. | |
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| run-tests.py can pass its own tests (test-run-tests.py and test-run-tests.t) under 2.6, 2.7 and 3.5 as of [[https://hg.python.org/cpython/rev/1764d42b340d|this change in cpython]]. The series will be submitted for review to hg once we're ready to drop Python 2.4 and 2.5. | == Next Steps == * Get the entire codebase working with 'from future import absolute_import' * This requires fixing some cyclic imports. See test-module-imports.t for currently whitelisted cyclic imports. * Make existing modules at least parse with Python 3 (still some Python 2.x syntax) * Remove 2to3 and have the source be 2.6/2.7/3.5 compatible * Conditionalize imports for renamed modules * Get the C extensions compiling correctly in Python 3 * Start adding b'' and u'' everywhere and using 'from future import unicode_literals' |
Note:
This page is primarily intended for developers of Mercurial.
Python 3
To see a summary of our current position on Python 3 support, see SupportedPythonVersions#Python_3.x_support.
This is a status page for keeping track of what needs to be done to make progress on Mercurial on Python 3.
Nobody is actively working on this - AugieFackler works on it sporadically, and would be happy to see patches on this topic flagged with Py3 on the mailing list. The work in progress is visible at http://hg.durin42.com/hg-py3k/ - note that ChangesetEvolution is in use on that repository, and so hashes will change over time as the patchset is rebased.
1. What Works
run-tests.py can pass its own tests (test-run-tests.py and test-run-tests.t) under 2.6, 2.7 and 3.5.
2. Next Steps
- Get the entire codebase working with 'from future import absolute_import'
- This requires fixing some cyclic imports. See test-module-imports.t for currently whitelisted cyclic imports.
- Make existing modules at least parse with Python 3 (still some Python 2.x syntax)
- Remove 2to3 and have the source be 2.6/2.7/3.5 compatible
- Conditionalize imports for renamed modules
- Get the C extensions compiling correctly in Python 3
Start adding b and u everywhere and using 'from future import unicode_literals'