We are pleased to announce the release of Pyomo 6.0.1.

Pyomo is a collection of Python software packages that supports a

diverse set of optimization capabilities for formulating and analyzing

optimization models.

The following are highlights of the 6.0 release series:

- Improved stability and robustness of core Pyomo code and solver interfaces

- Integration of Boolean variables into GDP

- New packages: APPSI, structural model analysis, external grey box models

Note: As a major release, Pyomo 6.0 has certain backwards

incompatibilities with the 5.x series and the 2nd Edition of the Pyomo

Book. Most notably:

- Removed support for Python 2.7 or 3.5

- Moved PySP into a separate package at https://github.com/Pyomo/pysp

- Renamed "Simple" components to "Scalar" components

- Removed support for implicit ranged inequalities (a <= m.x <= b)

- Removed support for component reconstruct method

- Removed support for casting relational expressions to bool

A full list of updates and changes is available in the CHANGELOG.txt

Enjoy!

- Pyomo Developer Team

- pyomo-developers@googlegroups.com

- https://www.pyomo.org

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About Pyomo

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The Pyomo home page provides resources for Pyomo users:

* https://www.pyomo.org

Pyomo development is hosted at GitHub:

* https://github.com/Pyomo

Get help at

* StackOverflow: https://stackoverflow.com/questions/tagged/pyomo

* Pyomo Forum: https://groups.google.com/group/pyomo-forum/