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| author | Nick Coghlan <ncoghlan@gmail.com> | 2008-08-18 12:31:52 (GMT) |
|---|---|---|
| committer | Nick Coghlan <ncoghlan@gmail.com> | 2008-08-18 12:31:52 (GMT) |
| commit | 36f4952404e05ac550e33c8ba2fde831fde8fecd (patch) | |
| tree | 7e42d285751bac81743d4424eed375b1db5b5475 | |
| parent | 7d10c2baf99f9dc4318fe985b0709816ef192d61 (diff) | |
| download | cpython-36f4952404e05ac550e33c8ba2fde831fde8fecd.zip cpython-36f4952404e05ac550e33c8ba2fde831fde8fecd.tar.gz cpython-36f4952404e05ac550e33c8ba2fde831fde8fecd.tar.bz2 | |
Forward port only Py3k relevant change in r65642 (giving it a Py3k NEWS entry anyway because of the difference in the changes between the two branches)
| -rw-r--r-- | Lib/numbers.py | 2 | ||||
| -rw-r--r-- | Misc/NEWS | 6 |
2 files changed, 8 insertions, 0 deletions
diff --git a/Lib/numbers.py b/Lib/numbers.py index c72a23d..827c253 100644 --- a/Lib/numbers.py +++ b/Lib/numbers.py @@ -15,6 +15,8 @@ class Number(metaclass=ABCMeta): If you just want to check if an argument x is a number, without caring what kind, use isinstance(x, Number). """ + # Concrete numeric types must provide their own hash implementation + __hash__ = None ## Notes on Decimal @@ -30,6 +30,12 @@ Core and Builtins Library ------- +- Issue #2235: numbers.Number now blocks inheritance of the default id() + based hash because that hash mechanism is not correct for numeric types. + All concrete numeric types that inherit from Number (rather than just + registering with it) must explicitly provide a hash implementation in + order for their instances to be hashable. + - Issue #2676: in the email package, content-type parsing was hanging on pathological input because of quadratic or exponential behaviour of a regular expression. |