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| author | Eric V. Smith <ericvsmith@users.noreply.github.com> | 2018-02-26 02:30:17 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-02-26 02:30:17 (GMT) |
| commit | dbf9cff48a4ad0fd58e1c623ce1f36c3dd3d5f38 (patch) | |
| tree | b44951c74baf95d62b496746de64cb6434896d5d /Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst | |
| parent | 9c17e3a1987004b8bcfbe423953aad84493a7984 (diff) | |
| download | cpython-dbf9cff48a4ad0fd58e1c623ce1f36c3dd3d5f38.zip cpython-dbf9cff48a4ad0fd58e1c623ce1f36c3dd3d5f38.tar.gz cpython-dbf9cff48a4ad0fd58e1c623ce1f36c3dd3d5f38.tar.bz2 | |
bpo-32929: Dataclasses: Change the tri-state hash parameter to the boolean unsafe_hash. (#5891)
unsafe_hash=False is now the default. It is the same behavior as the old hash=None parameter. unsafe_hash=True will try to add __hash__. If it already exists, TypeError is raised.
Diffstat (limited to 'Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst')
| -rw-r--r-- | Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst b/Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst new file mode 100644 index 0000000..b8a470c --- /dev/null +++ b/Misc/NEWS.d/next/Library/2018-02-25-13-47-48.bpo-32929.X2gTDH.rst @@ -0,0 +1,6 @@ +Remove the tri-state parameter "hash", and add the boolean "unsafe_hash". If +unsafe_hash is True, add a __hash__ function, but if a __hash__ exists, +raise TypeError. If unsafe_hash is False, add a __hash__ based on the +values of eq= and frozen=. The unsafe_hash=False behavior is the same as +the old hash=None behavior. unsafe_hash=False is the default, just as +hash=None used to be. |