Commit Graph

158 Commits

Author SHA1 Message Date
Raymond Hettinger 4e0ce82058
Revert "bpo-26680: Incorporate is_integer in all built-in and standard library numeric types (GH-6121)" (GH-22584)
This reverts commit 58a7da9e12.
2020-10-07 16:43:44 -07:00
Robert Smallshire 58a7da9e12
bpo-26680: Incorporate is_integer in all built-in and standard library numeric types (GH-6121)
* bpo-26680: Adds support for int.is_integer() for compatibility with float.is_integer().

The int.is_integer() method always returns True.

* bpo-26680: Adds a test to ensure that False.is_integer() and True.is_integer() are always True.

* bpo-26680: Adds Real.is_integer() with a trivial implementation using conversion to int.

This default implementation is intended to reduce the workload for subclass
implementers. It is not robust in the presence of infinities or NaNs and
may have suboptimal performance for other types.

* bpo-26680: Adds Rational.is_integer which returns True if the denominator is one.

This implementation assumes the Rational is represented in it's
lowest form, as required by the class docstring.

* bpo-26680: Adds Integral.is_integer which always returns True.

* bpo-26680: Adds tests for Fraction.is_integer called as an instance method.

The tests for the Rational abstract base class use an unbound
method to sidestep the inability to directly instantiate Rational.
These tests check that everything works correct as an instance method.

* bpo-26680: Updates documentation for Real.is_integer and built-ins int and float.

The call x.is_integer() is now listed in the table of operations
which apply to all numeric types except complex, with a reference
to the full documentation for Real.is_integer().  Mention of
is_integer() has been removed from the section 'Additional Methods
on Float'.

The documentation for Real.is_integer() describes its purpose, and
mentions that it should be overridden for performance reasons, or
to handle special values like NaN.

* bpo-26680: Adds Decimal.is_integer to the Python and C implementations.

The C implementation of Decimal already implements and uses
mpd_isinteger internally, we just expose the existing function to
Python.

The Python implementation uses internal conversion to integer
using to_integral_value().

In both cases, the corresponding context methods are also
implemented.

Tests and documentation are included.

* bpo-26680: Updates the ACKS file.

* bpo-26680: NEWS entries for int, the numeric ABCs and Decimal.

Co-authored-by: Robert Smallshire <rob@sixty-north.com>
2020-10-01 17:30:08 +01:00
Stefan Krah 39dab24621
bpo-41540: AIX: skip test that is flaky with a default ulimit. (#21890)
- AIX has extreme over-allocation that is in no relation to the physical
    RAM and swap.
2020-08-15 20:19:07 +02:00
Stefan Krah 39042e00ab
bpo-41324 Add a minimal decimal capsule API (#21519) 2020-08-10 16:32:21 +02:00
Inada Naoki 902356a7b0
bpo-41338: Fix DeprecationWarning in tests (GH-21542) 2020-07-20 12:02:50 +09:00
Serhiy Storchaka 4c8f09d7ce
bpo-36346: Make using the legacy Unicode C API optional (GH-21437)
Add compile time option USE_UNICODE_WCHAR_CACHE. Setting it to 0
makes the interpreter not using the wchar_t cache and the legacy Unicode C API.
2020-07-10 23:26:06 +03:00
Hai Shi f7ba40b505
bpo-40275: Use new test.support helper submodules in tests (GH-20849) 2020-06-25 12:38:51 +02:00
Stefan Krah 5fe1df1886
Fix missing FloatOperation in EXTRA_FUNCTIONALITY path. (#20655) 2020-06-05 22:01:18 +02:00
Stefan Krah 90930e6545
bpo-39576: Prevent memory error for overly optimistic precisions (GH-18581) 2020-02-21 01:52:47 +01:00
Pablo Galindo 293dd23477
Remove binding of captured exceptions when not used to reduce the chances of creating cycles (GH-17246)
Capturing exceptions into names can lead to reference cycles though the __traceback__ attribute of the exceptions in some obscure cases that have been reported previously and fixed individually. As these variables are not used anyway, we can remove the binding to reduce the chances of creating reference cycles.

See for example GH-13135
2019-11-19 21:34:03 +00:00
Serhiy Storchaka 34fd4c2019
bpo-35133: Fix mistakes when concatenate string literals on different lines. (GH-10284)
Two kind of mistakes:

1. Missed space. After concatenating there is no space between words.

2. Missed comma. Causes unintentional concatenating in a list of strings.
2018-11-05 16:20:25 +02:00
Stefan Krah e95dfc5006
bpo-33750: Reset thread-local context precision in test_round(). (#7355) 2018-06-03 18:40:00 +02:00
Victor Stinner 18e95b4176 bpo-31234: Join threads in tests (#3572)
Call thread.join() on threads to prevent the "dangling threads"
warning.
2017-09-14 08:43:04 -07:00
Antoine Pitrou a6a4dc816d bpo-31370: Remove support for threads-less builds (#3385)
* Remove Setup.config
* Always define WITH_THREAD for compatibility.
2017-09-07 18:56:24 +02:00
Victor Stinner d6debb24e0 bpo-29919: Remove unused imports found by pyflakes (#137)
Make also minor PEP8 coding style fixes on modified imports.
2017-03-27 16:05:26 +02:00
Andrew Nester 6d1dece06d Fixed #29534 - _decimal difference with _pydecimal (#65) 2017-02-14 18:22:55 +00:00
Serhiy Storchaka 70d28a184c Remove unused imports. 2016-12-16 20:00:15 +02:00
Brett Cannon a721abac29 Issue #26331: Implement the parsing part of PEP 515.
Thanks to Georg Brandl for the patch.
2016-09-09 14:57:09 -07:00
Stefan Krah 243d8a7866 Merge 3.5. 2016-07-17 14:12:59 +02:00
Stefan Krah 8c126f17f0 Issue #26974: Fix segfault in the presence of absurd subclassing. Proactively
eliminate all internal uses of overridden methods.
2016-07-17 14:01:42 +02:00
Stefan Krah 8113f490c5 Merge 3.5. 2016-06-20 12:10:42 +02:00
Stefan Krah 6817c59cf0 Issue #27006: from_float(): call the subclass' __new__() and __init__(). 2016-06-20 12:10:13 +02:00
Stefan Krah 66e9d03bf4 Issue #26621: Update libmpdec version and remove unnecessary test case. 2016-03-23 20:50:10 +01:00
Stefan Krah 53f2e0ad45 Issue #25928: Add Decimal.as_integer_ratio(). Python parts and docs by
Mark Dickinson.
2015-12-28 23:02:02 +01:00
Serhiy Storchaka 65ee4674e2 Issue #22777: Test pickling with all protocols. 2014-12-15 14:06:02 +02:00
Serhiy Storchaka bad1257c96 Issue #22777: Test pickling with all protocols. 2014-12-15 14:03:42 +02:00
Stefan Krah b578f8a1ef Issue #19232: Speed up decimal import. Additionally, since _decimal is
self-contained, this change facilitates maintenance and the Python version
can be easily imported for experimentation.
2014-09-10 17:58:15 +02:00
Stefan Krah 9ea83cff47 Merge 3.4. 2014-08-26 20:47:32 +02:00
Stefan Krah 298131a448 Issue #22090: Fix '%' formatting for infinities and NaNs. 2014-08-26 20:46:49 +02:00
Zachary Ware e7e1375e57 Issue #18492: Merge with 3.4 2014-06-02 16:04:25 -05:00
Zachary Ware 66f2928479 Issue #18492: Allow all resources when tests are not run by regrtest.py.
This changeset also includes cleanup allowed by this behavior change.
2014-06-02 16:01:29 -05:00
Stefan Krah 6b794b8b59 Fix typo and tests without docstrings. 2014-05-01 17:42:33 +02:00
Stefan Krah 5de1f82464 Issue #21407: _decimal now supports function signatures. 2014-05-01 15:53:42 +02:00
Stefan Krah b151f8f60b Issue #10650: Remove the non-standard 'watchexp' parameter from the
Decimal.quantize() method in the Python version.  It had never been
present in the C version.
2014-04-30 19:15:38 +02:00
Stefan Krah 8fb74a35da Issue #21374: Fix pickling of DecimalTuple. 2014-04-29 18:24:50 +02:00
Stefan Krah f1d4e42195 Issue #21374: Fix pickling of DecimalTuple. 2014-04-29 18:23:35 +02:00
Zachary Ware 0f533acf88 Avoid UnicodeEncodeError by only printing ASCII.
This fixes running test_decimal in verbose mode on Windows,
which I broke in issue #19572.
2013-12-12 10:32:16 -06:00
Zachary Ware 9fe6d86709 Issue 19572: More silently skipped tests explicitly skipped. 2013-12-08 00:20:35 -06:00
Stefan Krah 45059eb1d0 1) Prepare libmpdec for the 2.4.0 release. None of the following changes affects
_decimal:

      o Make all "mpd_t to C integer" conversion functions available in both the
        64-bit and the 32-bit versions.

      o Make all mixed mpd_t/C integer arithmetic functions available in the
        32-bit version.

      o Better handling of __STDC_LIMIT_MACROS for C++ users.

      o Add struct tags (at the request of C++ users).

2) Check for libmpdec.so.2 if --with-system-libmpdec is used.
2013-11-24 19:44:57 +01:00
Serhiy Storchaka 9594942716 Issue #18783: Removed existing mentions of Python long type in docstrings,
error messages and comments.
2013-08-27 19:40:23 +03:00
Stefan Krah 891ca9e06a Backport bff16086f03b and bcaaaa00425b. 2013-05-29 19:14:17 +02:00
Stefan Krah 6edda14b29 Issue #17768: Support newline fill character in decimal.py and NUL fill
character in _decimal.c.
2013-05-29 15:45:38 +02:00
Terry Jan Reedy 0f84764a09 Issue #17047: remove doubled words added in 3.3
as reported by Serhiy Storchaka and Matthew Barnett.
2013-03-11 18:34:00 -04:00
Stefan Krah eb8c451bd2 Since the return type of format() is not a Decimal, raise ValueError instead of
InvalidOperation if the format specification (width, prec) exceeds the internal
limits of libmpdec.
2013-01-24 15:22:33 +01:00
Stefan Krah 59a4a93f43 Issue #16422: Use strings for rounding mode constants for better readability
and pickling compatibility.
2013-01-16 12:58:59 +01:00
Stefan Krah 9a4ff437d1 Issue #15783: Support None default values in the Context() constructor. 2012-12-16 21:10:35 +01:00
Stefan Krah 040e311826 Issue #15783: Except for the number methods, the C version of decimal now
supports all None default values present in decimal.py. These values were
largely undocumented.
2012-12-15 22:33:33 +01:00
Stefan Krah 6e467049c6 Accept Unicode legacy strings in the Decimal constructor. 2012-11-10 23:09:04 +01:00
Stefan Krah 0f82b76b57 Issue #16431: Finally, consider all permutations. 2012-11-08 11:17:29 +01:00
Stefan Krah ed16eff57e Issue #16431: Also fix the opposite direction. 2012-11-07 23:47:19 +01:00