The Pyomo Book is Coming Soon

The Python Optimization Modeling Objects (Pyomo) package is an open source tool for modeling optimization applications in Python. Pyomo can be used to define symbolic problems, create concrete problem instances, and solve these instances with standard solvers. Pyomo provides a capability that is commonly associated with algebraic modeling languages such as AMPL, AIMMS, and GAMS, but Pyomo's modeling objects are embedded within a full-featured high-level programming language with a rich set of supporting libraries. Pyomo leverages the capabilities of the Coopr software library, which integrates Python packages for defining optimizers, modeling optimization applications, and managing computational experiments.

Of course, there is very little online documentation describing Pyomo.  However, the first book on Pyomo is set to be published in February!
Pyomo - Optimization Modeling in Python. William E. Hart, Carl Laird, Jean-Paul Watson and David L. Woodruff. Springer, 2012.
Here are some links if you want to learn more:
Enjoy!

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