From e7dfe74ce39cad736da8e3a24fdc4cfb50c7c515 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Mon, 24 Jan 2011 09:17:24 +0000 Subject: [PATCH] Add entry for hash_info(). --- Doc/whatsnew/3.2.rst | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Doc/whatsnew/3.2.rst b/Doc/whatsnew/3.2.rst index d6872dcb1f..203c18d225 100644 --- a/Doc/whatsnew/3.2.rst +++ b/Doc/whatsnew/3.2.rst @@ -1106,6 +1106,14 @@ values are equal (:issue:`8188`):: assert hash(Fraction(3, 2)) == hash(1.5) == \ hash(Decimal("1.5")) == hash(complex(1.5, 0)) +Some of the hashing details are exposed through a new attribute, +:attr:`sys.hash_info`, which describes the bit width of the hash value, the +prime modulus, the hash values for *infinity* and *nan*, and the multiplier +used for the imaginary part of a number: + +>>> sys.hash_info +sys.hash_info(width=64, modulus=2305843009213693951, inf=314159, nan=0, imag=1000003) + An early decision to limit the inter-operability of various numeric types has been relaxed. It is still unsupported (and ill-advised) to have implicit mixing in arithmetic expressions such as ``Decimal('1.1') + float('1.1')`` -- 2.40.0