diff options
| -rw-r--r-- | Lib/decimal.py | 7 | ||||
| -rw-r--r-- | Lib/test/test_decimal.py | 7 | ||||
| -rw-r--r-- | Misc/NEWS | 2 |
3 files changed, 16 insertions, 0 deletions
diff --git a/Lib/decimal.py b/Lib/decimal.py index 661d6ed..3ad80b3 100644 --- a/Lib/decimal.py +++ b/Lib/decimal.py @@ -135,6 +135,7 @@ __all__ = [ ] import copy as _copy +import numbers as _numbers try: from collections import namedtuple as _namedtuple @@ -3567,6 +3568,12 @@ def _dec_from_triple(sign, coefficient, exponent, special=False): return self +# Register Decimal as a kind of Number (an abstract base class). +# However, do not register it as Real (because Decimals are not +# interoperable with floats). +_numbers.Number.register(Decimal) + + ##### Context class ####################################################### diff --git a/Lib/test/test_decimal.py b/Lib/test/test_decimal.py index b995557..114cd5b 100644 --- a/Lib/test/test_decimal.py +++ b/Lib/test/test_decimal.py @@ -30,6 +30,7 @@ import os, sys import pickle, copy import unittest from decimal import * +import numbers from test.test_support import (TestSkipped, run_unittest, run_doctest, is_resource_enabled) import random @@ -1334,6 +1335,12 @@ class DecimalUsabilityTest(unittest.TestCase): class DecimalPythonAPItests(unittest.TestCase): + def test_abc(self): + self.assert_(issubclass(Decimal, numbers.Number)) + self.assert_(not issubclass(Decimal, numbers.Real)) + self.assert_(isinstance(Decimal(0), numbers.Number)) + self.assert_(not isinstance(Decimal(0), numbers.Real)) + def test_pickle(self): d = Decimal('-3.141590000') p = pickle.dumps(d) @@ -213,6 +213,8 @@ Library - Issue #1885: distutils. When running sdist with --formats=tar,gztar the tar file was overriden by the gztar one. +- Registered Decimal as a numbers.Number. + - Issue #1672332: fix unpickling of subnormal floats, which was producing a ValueError on some platforms. |