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| author | Pablo Galindo <Pablogsal@gmail.com> | 2019-06-25 01:41:58 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-06-25 01:41:58 (GMT) |
| commit | b51b7137faa22e12c570c70fe0462c662ccd935e (patch) | |
| tree | 08b9398d3d8d1236ad3590f16e7bf9349153b90b /Doc/whatsnew | |
| parent | 36456df13843c5b8a1fb5a6022ab9ed1fe2a11c5 (diff) | |
| download | cpython-b51b7137faa22e12c570c70fe0462c662ccd935e.zip cpython-b51b7137faa22e12c570c70fe0462c662ccd935e.tar.gz cpython-b51b7137faa22e12c570c70fe0462c662ccd935e.tar.bz2 | |
bpo-35224: Add What's new entry for evaluation order in dict comprehensions (GH-14319)
Diffstat (limited to 'Doc/whatsnew')
| -rw-r--r-- | Doc/whatsnew/3.8.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst index 1081ef2..1177c82 100644 --- a/Doc/whatsnew/3.8.rst +++ b/Doc/whatsnew/3.8.rst @@ -349,6 +349,9 @@ Other Language Changes is ``-1``, and a suitable power of that inverse for other negative exponents. (Contributed by Mark Dickinson in :issue:`36027`.) +* When dictionary comprehensions are evaluated, the key is now evaluated before + the value, as proposed by :pep:`572`. + New Modules =========== @@ -1502,6 +1505,11 @@ CPython bytecode changes when awaiting a next item in an :keyword:`async for` loop. (Contributed by Serhiy Storchaka in :issue:`33041`.) +* The :opcode:`MAP_ADD` now expects the value as the first element in the + stack and the key as the second element. This change was made so the key + is always evaluated before the value in dictionary comprehensions, as + porposed by :pep:`572`. (Contributed by Jörn Heissler in :issue:`35224`.) + Demos and Tools --------------- |