Home

Wiki

Welcome to the SymPy wiki!

We encourage everyone to participate in this wiki. To edit it, you need to create an account (top right corner). Just fill in your name and password and that's it (no email confirmation, or other annoying things). Feel free to play/test something in the Sandbox.

Note, there are a bunch of pages in this wiki that are not linked to from here. See them all here.

Links

SymPy Home | Mailing list | Download | Documentation | Issues | Release Notes | Planet SymPy (blogs) |

What is SymPy?

SymPy is a computer algebra system (CAS) written in the Python programming language. SymPy is easy to use and install (see the download instructions and tutorial for more information), and works everywhere where Python 3.8 or newer is installed (Linux, Windows, Mac OS X, ...). SymPy's features include:

• Arbitrary precision integers, rationals and floats, as well as symbolic expressions
• Simplification (grouping like a*b*b + 2*b*a*b → 3*a*b**2, expansion like expand((a + b)**2) → a**2 + 2*a*b + b**2, and other methods of rewriting expressions (cancel, factor, collect, etc...)
• Functions (exp, log, sin, ...)
• Complex numbers (like exp(I*x).expand(complex=True) → cos(x)+I*sin(x))
• Taylor (Laurent) series and limits
• Differentiation and integration

Documentation

The main SymPy documentation is maintained at http://docs.sympy.org (where you can see both the development and the latest stable versions docs). The full change log can be viewed here.

The issue tracker is located at http://github.com/sympy/sympy/issues.

The best place to begin is the Tutorial. A lot of useful information can also be found in the following:

• FAQ -- Frequently Asked Questions about SymPy
• Quick examples -- This page shows example commands for doing common calculations in SymPy
• Cookbook -- Various recipes
• Presentations -- Slides, tutorials and posters from conferences
• SymPy Papers -- Academic and white papers written about or using SymPy.
• External SymPy Media, Tutorials, and Presentations -- Learning materials written by others.
• SymPy in the news -- SymPy in the News and Blogs
• Related software -- projects related to SymPy
• Comparison to popular CAS's -- Axiom, Magma, Maple, Mathematica, Matlab, Maxima, Sage, Yacas

Development

• Introduction to Contributing -- how to get started as a contributor
• Getting The Bleeding Edge -- how to get the latest development version of sympy
• Running tests -- how to test the code and examples in documentation
• Debugging -- useful when debugging more complex parts of SymPy
• Development workflow -- how to send a patch
• Windows development using git -- SymPy on Windows
• Jupyter Workflow -- Tips for using Jupyter Notebooks
• Pushing patches -- Guide for people who get push access to the official git repo
• Writing documentation -- how to write docstrings, tutorials etc.
• Adding Someone to AUTHORS -- details about how .mailmap works and tools for monitoring authors
• Using .mailmap
• Deprecating policy -- deprecating an existing method/function/class
• Python Version -- what Python versions we support and how long we do
• git hg rosetta stone -- direct translation of hg commands to git
• Sage Symbench -- Symbolic benchmarks
• buildbot -- SymPy buildbot
• Contributors -- list of all contributors and sponsors of SymPy

Projects / Ideas

• Roadmap -- Our roadmap to SymPy 1.0
• Ideas -- Random ideas, not necessarily related to SymPy, but that could be useful for SymPy in the future
• Generic interface -- SymPy/SymPyCore design notes
• Technical References -- Related mathematical literature and websites
• Test automation -- Wishlist scratchpad for streamlining the test suite
• Unit systems -- Some ideas to improve unit systems.

Google Summer of Code

• GSoC Student Instructions -- Starting instructions for for SymPy GSoC applicants.
• GSoC Ideas -- List of ideas for GSoC project proposals and list of potential mentors which is updated annually.
• GSoC Application Template -- Application template (copy into a new page and edit)

GSoC 2025

• GSoC 2025 Current Applications
• Reports

GSoC 2024

• GSoC 2024 Current Applications
• Reports
  • GSoC 2024 Report Hwayeon Kang: Implementing Specific Forces and Torques
  • GSoC 2024 Report Riccardo Di Girolamo: Enhancing Performance in SymPy Mechanics and Vector Modules

GSoC 2023

• GSoC 2023 Current Applications
  • GSoC 2023 : Improving and Expanding the Functionalities of SymPy's Control Module by Anurag Bhat
  • GSoC 2023 Application Abhinav Cillanki: Improving physics.continuum_mechanics subpackage
  • GSoC 2023 Application Aman Kumar Shukla: Sympy Gamma
  • GSoC 2023 Application Baiyuan Qiu: Extensions of Symbolic Control Systems (sympy.physics.control)
• Reports
  • GSoC 2023 Project Report by Ishan Pandhare
  • GSoC 2023 Report Abhishek Patidar : Improving Polynomial GCD
  • GSoC 2023 Report Tilo Reneau‐Cardoso: Improving Relational Assumptions in SymPy’s New Assumptions
  • GSoC 2023 Report Tirthankar Mazumder: Rewriting the LaTeX parser in Lark

GSoC 2022

• GSoC 2022 Organization Application
• GSoC 2022 Phase III plan
• GSoC 2022 Current Applications
• GSoC 2022 Report
  • GSoC 2022 : Improving Series Expansions and Limit Computations Report by Anutosh Bhat
  • GSoC 2022 Report Advait Pote : Extending the Continuum Mechanics Module
  • GSoC 2022 Report Timo Stienstra : Enhancing the Joints Framework

GSoC 2021

• GSoC 2021 Organization Application
• GSoC 2021 Current Applications
  • GSoC 2021 Application NTEM, KENYOR K.: Improving the Sympy Live and Sympy Gamma
• GSoC 2021 Report
  • GSoC 2021 Report: Improve and Expand Functionalities in Control Module (Akshansh Bhatt)
  • GSoC 2021 Report: Improving Series Expansion (Sidharth Mundhra)
  • GSoC 2021 Report: Mohit Balwani Refactor the ODE module and make it fast
  • GSoC 2021 Report: Naveen Sai Rational Solutions of Riccati ODEs
  • GSoC 2021 Report Prakhar Saxena : Creating a Rich Beam Solver and Extending Continuum Mechanics Module
  • GSoC 2021 Report Sudeep Sidhu : Implement JointsMethod

GSoC 2020

• GSoC 2020 Organization Application
• GSoC 2020 Student Instructions
• GSoC 2020 Ideas
• GSoC 2020 Application Template
• GSoC 2020 Current Applications
  • GSoC 2020 Application Faisal Riyaz: Implementation of Vector Integration
  • GSoC 2020 Application Moses Paul R: Advancing SymPy Gamma
  • GSoC 2020 Application Omar Wagih: Benchmarks and performance
  • GSoC 2020 proposal Arpan Chattopadhyay: Improving Assumptions Module
  • GSoC 2020 proposal Arpan Chattopadhyay: Improving SymEngine Sympy Integration and SymPy core to SymEngine
• GSoC 2020 Report
  • GSoC 2020 Report Faisal Riyaz: Implementation of Vector Integration
  • GSoC 2020 Report Milan Jolly: Improving and Extending ODE Module
  • GSoC 2020 Report Sachin Agarwal: Series and Limits
  • GSoC 2020 Report Smit Lunagariya: Improving and Extending stats module

GSoC 2019

For Students:

• GSoC 2019 Student Instructions -- How to get started with an application.
• GSoC 2019 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2019 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2019 Current Applications -- A list of active proposals. Link your GSoC 2019 Project Proposal here

For Mentors:

• GSoC 2019 Mentor Instructions -- Mentors need help too.
• GSoC 2019 Organization Application -- Our application to be an organization for Google Summer of Code
• GSoC 2019 Report -- Report for the GSoC 2019

GSoC 2018

For Students:

• GSoC 2018 Student Instructions -- How to get started with an application.
• GSoC 2018 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2018 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2018 Current Applications -- A list of active proposals. Link your GSoC 2018 Project Proposal here

For Mentors:

• GSoC 2018 Mentor Instructions -- Mentors need help too.
• GSoC 2018 Organization Application -- Our application to be an organization for Google Summer of Code
• GSoC 2018 Report -- Report for the GSoC 2018

GSoC 2017

For Students:

• GSoC 2017 Student Instructions -- How to get started with an application.
• GSoC 2017 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2017 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2017 Current Applications -- A list of active proposals. Link your GSoC 2017 Project Proposal here

GSoC 2016

For Students:

• GSoC 2016 Student Instructions -- How to get started with an application.
• GSoC 2016 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2016 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2016 Current Applications -- A list of active proposals. Link your GSoC 2016 Project Proposal here

For Mentors:

• GSoC 2016 Mentor Instructions -- Mentors need help too.
• GSoC 2016 Organization Application -- Our application to be an organization for Google Summer of Code
• GSoC 2016 Report -- Report for the GSoC 2016

GSoC 2015

For Students:

• GSoC 2015 Student Instructions -- How to get started with an application.
• GSoC 2015 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2015 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2015 Current Applications -- A list of active proposals. Link your GSoC 2015 Project Proposal here

For Mentors:

• GSoC 2015 Mentor Instructions -- Mentors need help too.
• GSoC 2015 Organization Application -- Our application to be an organization for Google Summer of Code
• GSoC 2015 Report -- Report for the GSoC 2015

GSoC 2014

• GSoC 2014 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2014 Organization Application -- Our application to be an organization for Google Summer of Code 2014
• GSoC 2014 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2014 Current Applications -- A list of active proposals. Link your GSoC 2014 Project Proposal here
• GSoC 2014 Report -- Report for the GSoC 2014

GSoC 2013

• GSoC 2013 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2013 Organization Application -- Our application to be an organization for Google Summer of Code 2013
• GSoC 2013 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2013 Current Applications -- A list of active proposals. Link your GSoC 2013 Project Proposal here
• GSoC 2013 Report -- Report for the GSoC 2013

GSoC 2012

• GSoC 2012 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2012 Organization Application -- Our application to be an organization for Google Summer of Code 2012
• GSoC 2012 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2012 Current Applications -- A list of active proposals. Link your GSoC 2012 Project Proposal here
• GSoC 2012 Report -- Report for the GSoC 2012

GSoC 2011

• GSoC 2011 Ideas -- Ideas for Google Summer of Code projects
• GSoC 2011 Organization Application -- Our application to be an organization for Google Summer of Code 2011
• GSoC 2011 Application Template -- The template for student applications for Google Summer of Code
• GSoC 2011 Current Applications -- A list of active proposals. Link your GSoC 2011 Project Proposal here
• GSoC 2011 Report -- Report for the GSoC 2011

Old GSoC Reports

• GSoC Previous Applications -- Some examples of successful Google Summer of Code applications from 2009 and 2010
• GSoC 2010 Report -- Report for the GSoC 2010
• GSoC 2009 Report -- Report for the GSoC 2009
• GSoC 2008 Report -- Report for the GSoC 2008
• GSoC 2007 Report -- Report for the GSoC 2007

Google Code In

GCI 2012

• GCI 2012 Landing -- Landing page for students who participated in Google Code-In 2012 with SymPy
• GCI 2012 Organization Application -- Our application to be an organization for Google Code-In 2012

GCI 2011

• GCI 2011 Landing -- Landing page for students who participated in Google Code-In 2011 with SymPy
• GCI 2011 Mentors -- Mentors for the Google Code In 2011
• GCI 2011 Organization Application -- Our application to be an organization for Google Code In 2011
• CGI 2011 Task list (spreadsheet) -- Our task list for Google Code In 2011
• GCI 2011 Task list (wiki)

GHOP 2007

• GHOP 2007 -- Landing page for students who participated in Google Highly Open Participation contest 2007 with SymPy

Moving from google wiki

There are many pages copied here from the old Google code wiki. These should be updated and reformatted for github. They can be found by going here. and looking for the pages starting with "old wiki". When these are updated, the header should be changed and the file moved to remove the "old wiki" designation.

License SymPy

Unless stated otherwise, everything on this wiki is licensed under the same terms as SymPy, i.e. modified BSD license. This is so that we can take anything from here and add it to the SymPy tarball as a documentation. See License choice for the motivation and discussion behind that choice.

If you have some interesting material, that you don't want to (or cannot) make BSD licensed, please put there a notice, that it has some other license.