SymPy 1.7 released

[Oscar Benjamin]

Hi all,

It is my pleasure to announce the final release of SymPy 1.7. The
wheel and sdist files for this release are already uploaded to pypi.
You can install sympy 1.6 with:

$ pip install -U sympy

There are a lot of changes since 1.6.2. The full release notes are here:
https://github.com/sympy/sympy/wiki/Release-Notes-for-1.7

The release files are also on GitHub:
https://github.com/sympy/sympy/releases/tag/sympy-1.7

Note that there is a section on deprecations and compatibility breaks
at the top of the release notes page that lists a number of
significant changes.

The supported Python versions for SymPy 1.7 are 3.6-3.9.

Please report any issues with the release on github:
https://github.com/sympy/sympy/issues

## Authors

The following people contributed at least one patch to this release (names are
given in alphabetical order by last name). A total of 94 people
contributed to this release. People with a * by their names contributed a
patch for the first time for this release; 56 people contributed
for the first time for this release.

Thanks to everyone who contributed to this release!
- 彭于斌*
- Abhay_Dhiman*
- Sachin Agarwal
- Shubham Agrawal*
- Sakirul Alam*
- Abhinav Anand
- Mohit Balwani
- Elias Basler*
- Nijso Beishuizen*
- Oscar Benjamin
- Mohammed Bilal*
- Francesco Bonazzi
- Peter Brady
- Ondřej Čertík
- Peter Cock*
- Coder-RG*
- Lorenzo Contento*
- Björn Dahlgren
- Vaishnav Damani*
- Brandon David*
- Aaryan Dewan*
- Amanda Dsouza*
- Shivang Dubey*
- noam simcha finkelstein*
- foice*
- Garrett Folbe*
- Smit Gajjar
- Wes Galbraith*
- Mauro Garavello
- Naman Gera
- Sneha Goddu*
- goddus*
- Michael Greminger*
- Oscar Gustafsson
- Sayandip Halder*
- Jerry James
- Milan Jolly
- Yathartha Joshi
- KaustubhDamania*
- Tasha Kim*
- Jan Kruse*
- Muskan Kumar*
- S.Y. Lee
- Mathias Louboutin*
- Smit Lunagariya
- Nikhil Maan
- Ayush Malik*
- Alex Malins*
- Islam Mansour*
- mcpl-sympy*
- Willem Melching*
- Dhruv Mendiratta
- Ehren Metcalfe
- Aaron Meurer
- Ansh Mishra*
- mohit
- Markus Mohrhard*
- Jason Moore
- Dave Witte Morris*
- Shital Mule*
- numbermaniac*
- Ben Payne*
- Ilya Pchelintsev
- Benedikt Placke*
- Chris du Plessis*
- Tomasz Pytel
- Moses Paul R
- Akhil Rajput*
- rationa-kunal
- Faisal Riyaz
- Naveen Sai*
- Devesh Sawant*
- Gilles Schintgen
- seadavis*
- Mohit Shah*
- Sudeep Sidhu*
- Gagandeep Singh
- Marijan Smetko*
- Chris Smith
- Jisoo Song
- soumi7*
- Lagaras Stelios*
- Wolfgang Stöcher*
- Kalevi Suominen
- Nathan Taylor*
- Martin Thoma
- Rudr Tiwari*
- Seth Troisi
- w495*
- Erik Welch
- Eric Wieser
- Benjamin Wolba*
- wuyudi
- Zhongshi*


The SHA sums for the release files are:

f66c72f835823740140f6c2f229ae669385b7768cacb7197fbc8a81fe1ad3c31
sympy-docs-pdf-1.7.pdf
9104004669cda847f38cfd8cd16dd174952c537349dbae740fea5331d2b3a51b
sympy-1.7.tar.gz
09aa4b3075e505108cb84785ba358e58a53d9596c8c71f07b613958b9150c481
sympy-1.7-py3-none-any.whl
6f77c64ca90d26ff70e513e60e42eac3a79dafff8e649edc0bab6340720ba694
sympy-docs-html-1.7.zip

--
Oscar

[Oscar Benjamin]

As soon as I send the email I see an obvious correction. That should say:

You can install sympy *1.7* with:

$ pip install -U sympy

--
Oscar

[Jonathan Gutow]

Thank you to everyone who contributed and Oscar for making the release
happen. SymPy has been extremely useful to me.

Jonathan

On 11/29/20 08:25, Oscar Benjamin wrote:
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[David Bailey]

On 29/11/2020 14:26, Oscar Benjamin wrote:

As soon as I send the email I see an obvious correction. That should say:

You can install sympy *1.7* with:

Thanks Oscar.

I already see an improvement!

I tried modifying the ODE transformer code you sent me to use x=cosh(t), and at 1.6 the resultant expression didn't simplify properly, but at 1.7 it does. I guess someone put an improvement into trigsimp (which I discovered works for the hyperbolic functions too).

David

[Oscar Benjamin]

On Sun, 29 Nov 2020 at 23:48, David Bailey <da...@dbailey.co.uk> wrote:
>
> I already see an improvement!
>
> I tried modifying the ODE transformer code you sent me to use x=cosh(t), and at 1.6 the resultant expression didn't simplify properly, but at 1.7 it does. I guess someone put an improvement into trigsimp (which I discovered works for the hyperbolic functions too).

Excellent! I expect that is the change here by Gilles Schintgen:
https://github.com/sympy/sympy/pull/19548

--
Oscar

[Aaron Meurer]

It may interest some people here to see that SymPy is on Hacker News
again https://news.ycombinator.com/item?id=25254648 (currently on the
second page). There are quite a few interesting comments there about
different ways that people are using SymPy.

Aaron Meurer