Another important change in this release is that Rational (and Integer) and Float objects no longer compare equal to one another with ==.
Previously: >>> Integer(1) == Float(1.0) True >>> Rational(1, 2) == Float(0.5) True Now: >>> Integer(1) == Float(1.0) False >>> Rational(1, 2) == Float(0.5) False This was previously applied inconsistently. For example, it always worked this way inside of expressions >>> x**2 == x**2.0 False The motivation for this change is that == means structural, not mathematical equality in SymPy, and rational and floating-point numbers have different properties that make it inappropriate to consider them to be equivalent. It also fixes a long standing issue where Floats and Rationals would compare equal but not hash to the same values. This is a change that I expect could affect upstream projects, so if you depend on SymPy I would suggest trying 1.13rc1 out and letting us know if it affects you in a serious way. Aaron Meurer On Thu, Jun 6, 2024 at 9:08 AM Oscar Benjamin <oscar.j.benja...@gmail.com> wrote: > > Hi all, > > I have just pushed SymPy 1.13.0rc1 to PyPI. This is a prerelease that > is being made available for early testing. > > You can install this with: > > pip install sympy==1.13.0rc1 > > Or alternatively: > > pip install --upgrade --pre sympy > > The release files can also be downloaded from GitHub: > > https://github.com/sympy/sympy/releases/tag/1.13.0rc1 > > I expect that a full release of 1.13.0 will be made fairly soon and I > don't anticipate that there would be significant changes between rc1 > and final release. > > There are many changes since the previous release 1.12 which was just > over a year ago. you can find the release notes here although they > still need cleaning up: > > https://github.com/sympy/sympy/wiki/Release-Notes-for-1.13 > > One particular highlight of this release is that it can use > python-flint to accelerate some polynomial and other operations. It > would be great if people could test this out by installing > python-flint as well: > > pip install python-flint==0.6 > > You can set the environment variable SYMPY_GROUND_TYPES to any of > python, gmpy2 or flint to control which backend is used. The most > easily noticeable difference python-flint makes for now is speeding up > operations with univariate polynomials: > > $ SYMPY_GROUND_TYPES=python isympy > ... > IPython console for SymPy 1.13.0rc1 (Python 3.12.0-64-bit) (ground > types: python) > ... > In [1]: p = Poly(x + 1) > > In [2]: %time factor_list(p ** 100) > CPU times: user 117 ms, sys: 183 µs, total: 117 ms > Wall time: 115 ms > Out[2]: (1, [(Poly(x + 1, x, domain='ZZ'), 100)]) > > $ SYMPY_GROUND_TYPES=flint isympy > ... > IPython console for SymPy 1.13.0rc1 (Python 3.12.0-64-bit) (ground > types: flint) > ... > In [1]: p = Poly(x + 1) > > In [2]: %time factor_list(p ** 100) > CPU times: user 4.05 ms, sys: 16 µs, total: 4.07 ms > Wall time: 4.01 ms > Out[2]: (1, [(Poly(x + 1, x, domain='ZZ'), 100)]) > > That particular example shows a 30x speedup. Future releases of SymPy > will use flint for more operations so this is still in development but > it would be great for people to test this because although I have > tested SymPy with python-flint a lot I am not sure how many other > people have. > > As always please report any problems with the release either here or > on Github. There are so many changes in this release that it is > basically guaranteed that there will be some issues discovered > afterwards but it would be great if we could pick up on some of them > before the final release rather than after. > > ## Authors > > The following people contributed at least one patch to this release (names are > given in alphabetical order by last name). A total of 146 people > contributed to this release. People with a * by their names contributed a > patch for the first time for this release; 100 people contributed > for the first time for this release. > > Thanks to everyone who contributed to this release! > > - Daan Koning (he/him)* > - Anton Akhmerov > - Han Wei Ang* > - anutosh491 > - Isidora Araya* > - atharvParlikar* > - Oscar Benjamin > - Evandro Bernardes > - Anurag Bhat > - Francesco Bonazzi > - Augusto Borges* > - João Bravo* > - Sam Brockie > - Pontus von Brömssen > - Steven Burns* > - Liwei Cai* > - Corey Cerovsek* > - HeeJae Chang* > - Abhishek Chaudhary* > - Abhinav Cillanki* > - codecruisader* > - Costor > - Björn Dahlgren > - Saikat Das* > - Ethan DeGuire* > - Theodore Dias* > - dodo* > - fazledyn-or* > - Emile Fourcini* > - Mark van Gelder* > - Riccardo Di Girolamo* > - Pascal Gitz* > - Aaron Gokaslan > - Kishore Gopalakrishnan > - Michael Greminger > - Oscar Gustafsson > - Nick Harder* > - Zac Hatfield-Dodds* > - Le Cong Minh Hieu* > - Warren Jacinto* > - Jerry James > - Hwayeon Kang* > - Samith Karunathilake* > - Harsh Kasat* > - Johannes Kasimir* > - Kaustubh* > - Steve Kieffer > - Evelyn King > - Matthias Köppe > - K. Kraus* > - Abhishek kumar* > - Abhishek Kumar* > - Shishir Kushwaha* > - S.Y. Lee > - Raphael Lehner* > - Matthias Liesenfeld* > - Qijia Liu > - Sam Lubelsky > - Fabio Luporini* > - Megan Ly > - Nikhil Maan > - Colin B. Macdonald > - Oriel Malihi* > - Mohak Malviya* > - Martin Manns* > - Tirthankar Mazumder > - Ehren Metcalfe > - Aaron Meurer > - mohammedouahman* > - Lukas Molleman* > - John Möller* > - Suman mondal* > - Jason Moore > - Harry Mountain* > - Arnab Nandi* > - Harrison Oates* > - omahs* > - Victory Omole* > - Julien Palard > - Bobby Palmer* > - Ishan Pandhare > - Jay Patankar* > - Prey Patel* > - Abhishek Patidar > - Idan Pazi* > - Ivan Petukhov* > - philwillnyc* > - George Pittock* > - platypus* > - Advait Pote > - James A. Preiss* > - Dean Price* > - Psycho-Pirate > - Sophia Pustova* > - Baiyuan Qiu* > - Ravindu-Hirimuthugoda* > - Juha Remes > - Mikhail Remnev* > - Tilo Reneau-Cardoso* > - Matthias Rettl* > - Mohamed Rezk* > - Konstantinos Riganas* > - Sam Ritchie* > - Richard Rodenbusch* > - Pedro Rosa* > - Alberto Jiménez Ruiz* > - Bhavik Sachdev* > - Taylan Sahin* > - Saicharan > - Pablo Galindo Salgado > - Richard Samuel* > - Davide Sandonà > - Raj Sapale > - Gilles Schintgen > - Nico Schlömer > - Hanspeter Schmid > - Alexis Schotte* > - Vladimir Sereda* > - Ankit Kumar Singh* > - Sachin Singh* > - Maciej Skórski* > - Chris Smith > - Henrique Soares* > - Vivek Soni* > - Timo Stienstra > - Grace Su* > - Kalevi Suominen > - Daiki Takahashi > - Diane Tchuindjo > - Gerald Teschl* > - Seb Tiburzio* > - Tommaso Vaccari* > - Geetika Vadali* > - Viraj Vekaria* > - Laurence Warne* > - Daniel Weindl* > - James Whitehead* > - Lorenz Winkler* > - Congxu Yang* > - 袁野 (Yuan Ye)* > - Lauren Yim* > - Zedmat* > - Shuai Zhou* > - Zhenxu Zhu* > - Alexander Zhura* > - zzc* > > The SHA-256 hashes for the release are: > > 37392a943e14db2886543141c2121330887b6f834604a740a476f4b516315d11 > sympy-1.13.0rc1.tar.gz > f6fce4b6b1ef4d89631fe81380f4e562e86615d2aef0bc3a17c4f1d0e3cd5dab > sympy-1.13.0rc1-py3-none-any.whl > b3b729284e791f4af8d792c67d7dbf30289563ff2acf3d6650c7eac7284e7f6d > sympy-docs-html-1.13.0rc1.zip > 14436f97e203918ca9655491e79b412b3452e46e3fefa61c5f3d544c874c5788 > sympy-docs-pdf-1.13.0rc1.pdf > > -- > Oscar > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sympy+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sympy/CAHVvXxRUsh8CDHkJDc3dsYj4V_FkxWxa9MQpLSzw497bVni_9Q%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAKgW%3D6%2BPQcwkJaGHXSMtxTwPGzQMzVPYdv4QVt7cPiqEDeQJpg%40mail.gmail.com.
