The gams namespace provides objects to interact with the General Algebraic Modeling System (GAMS). Objects in this namespace allow convenient exchange of input data and model results (
GamsDatabase), help to create and run GAMS models (GamsJob), that can be customized by GAMS options (GamsOptions). Furthermore, it introduces a way to solve a sequence of closely related model instances in the most efficient way (GamsModelInstance).
A GAMS program can include other source files (e.g. $include), load data from GDX files (e.g. $GDXIN or execute_load), and create PUT files. All these files can be specified with a (relative) path and therefore an anchor into the file system is required. The base class GamsWorkspace manages the anchor to the file system. If external file communication is not an issue in a particular Python application, temporary directories and files will be managed by objects in the namespace.
With the exception of GamsWorkspace the objects in the gams namespace cannot be accessed across different threads unless the instance is locked. The classes themself are thread safe and multiple objects of the class can be used from different threads (see below for restrictions on solvers that are not thread safe within the GamsModelInstance class).