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Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/whatsnew/3.3.rst | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Doc/whatsnew/3.3.rst b/Doc/whatsnew/3.3.rst index 2ecb8ce..28294cb 100644 --- a/Doc/whatsnew/3.3.rst +++ b/Doc/whatsnew/3.3.rst @@ -474,6 +474,13 @@ Some smaller changes made to the core Python language are: (:issue:`12170`) +* A dict lookup now raises a :exc:`RuntimeError` if the dict is modified during + the lookup. If you implement your own comparaison function for objects used + as dict keys and the dict is shared by multiple threads, access to the dict + should be protected by a lock. + + (:issue:`14205`) + New and Improved Modules ======================== |