These are the release notes for SymPy 1.11.1. You can also find release notes for previous versions.

SymPy 1.11.1 was released on 30th August 2022.

This version of SymPy has been tested on Python 3.8, 3.9, 3.10, 3.11, and PyPy. See our Python version support policy for more information on when we plan to drop support for older Python versions.

Note in particular that SymPy 1.5.1 was the last release to support Python 2.7. SymPy 1.11 will not work on Python 2.7. Python 2.7 users should install SymPy 1.5.1 and will not be able to install any further SymPy updates without updating to Python 3.

Install SymPy with

pip install -U sympy

or if you use Anaconda

conda install sympy

There are not many changes in 1.11.1 (see below).

• utilities
  • The 1.11 release introduced a regression when using lambdify with the cse=True option (introduced in 1.9) resulting in a list being returned for a lambdified expression that was not a list. This bug is now fixed in the 1.11.1 release.

The following people contributed at least one patch to this release (names are given in alphabetical order by last name). A total of 3 people contributed to this release. People with a * by their names contributed a patch for the first time for this release; 0 people contributed for the first time for this release.

Thanks to everyone who contributed to this release!

• Oscar Benjamin
• Chris Smith
• Jason Moore

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