Python API Examples¶

This section lists a few examples in Python. These are the same files that can be found in the examples directory of the distribution, and show the basic usage of the Python API.

Note

Many Jupyter notebooks with examples are available on the AMPL Model Colaboratory and the new book Hands-On Mathematical Optimization with AMPL in Python 🐍.

You should also check out our collection of interactive Streamlit Apps and learn how easy you can build your own apps.

Example 1: First steps¶

first_example.py

This example shows how to

read an AMPL model
reassign values to parameters
solve the model
display the objective function value

Example 2: Get and set AMPL options¶

options_example.py

This example shows how to:

get and set AMPL options

Example 3: Assign all data to a model and solve it¶

diet_model.py

This example shows how to:

Assign all the data necessary to generate a model instance programmatically

Example 4: Build an efficient frontier¶

efficient_frontier.py

This example shows how to:

build an efficient frontier by repeteatly solve a portfolio problem in AMPL

Example 5: Simple heuristic¶

tracking_model.py

This example shows how to:

Do a simple heuristics for solving a QMIP problem, using the relaxed solution as a hint

AMPLException