lingo-api 19.0.5

Python interface to LINGO API

# The Python Interface to LINGO.

This package requires Lingo and a valid license key. Please refer to [Lingo user manual](https://lindo.com/downloads/PDF/LINGO.pdf) for installation instructions, and to learn more about the Lingo modeling language.

## Installation

This python package can be installed with pip. It is assumed 64-bit Lingo 19 is installed on host system.

For administrative users:

`bash > pip install lingo_api==19.0 `

For standard (non-administrative) users:

`bash > pip install lingo_api==19.0 --user `

## Testing

A quick way to test the installation is to run `bash > python -m lingo_test `

You can also try out the samples by ` > cd examples/CHESS > python chess.py `

## Possible errors due to misconfiguration

You may get the following error if your LINGO64_19_HOME environment variable is not set up.

` Error: Environment variable LINGO64_19_HOME should be set `

To fix the problem follow these steps

### Using Windows On the command line for windows 64 `dos > setx LINGO64_19_HOME "C:\LINGO64_19" ` ### Using Linux On the command line

For administrative users: ` $ export LINGO64_19_HOME="/opt/lingo19" ` For standard (non-administrative) users: ` $ export LINGO64_19_HOME="~/opt/lingo19" ` To have this variable set automatically, add the above line to your ~/.bashrc or ~/.bash_profile file.

## How to Build Wheel and Install (for package managers)

To build the python package on any operating system first start by creating a whl file. From the top of the lingoapi-python directory run the command.

`bash > python -m build `

If the command is successful a new directory named dist is created in the lingoapi-python directory. The new directory will have two files with extension .whl and .tar.gz. For example, if you built it on Windows using Python 3.10 the new directory will look like this.

`bash ├── dist │ ├── lingo_api-x.y.z-cp310-cp310-win_amd64.whl │ └── lingo-x.y.z.tar.gz `

The package can now be installed locally using the command. `bash > pip install dist/*.whl `