GAMS World Forum

I assume that the error is the same when running Kestrel from command line. So it seems that setting the SSL_CERT_FILE in [GAMS dir]\gmske_nt.cmd is not enough. If you allow me an experiment, could you change the following line of code in [GAMS dir]\gmske_nx.py (line 537): self.neos = xmlrpc.client....

Hi, It seems that the Kestrel solver uses an invalid certificate. Actually it should be aware of cacert.pem located in [GAMS dir]\GMSPython\Lib\site-packages\certifi. Does the Kestrel solver work from command line, if you do not have a Python script in between? There is also a Python example that de...

Pei Huang, The PKG installer on macOS allows to add the GAMS system directory to the PATH variable when a Terminal is opened. You might want to double-check its content using echo $PATH , but since you are able to call gams and gamslib, I guess that this is set up correctly. If you run the python in...

Looks like you are trying to use your dictionary qta with GamsSetRecords instead of keys. So you most likely want to do qta[(j.key(0),k.key(0))] instead of qta[(j,k)]

Best,
Clemens

I can not say anything about csr_matrix in particular, but if possible, you can skip the zeros of any sparse matrix representation when writing to an instance of GamsParameter. Filling data using the Object-oriented Python API always works record based by calling my_symbol.add_record([key1, key2,......

Hi, You can represent the matrix as a 2-dimensional GAMS parameter using the following code: from gams import * A=[[0., 0., 0., 0., 0.], [0., 0., 0., 0., 0.], [0., 0., 0., 0., 0.], [0., 0., 0., 1., 0.], [0., 0., 0., 0., 1.]] ws = GamsWorkspace(".") db = ws.add_database('data') mat = db.add...

Renger, First of all we need to distinguish between the use of the GAMS Python API and the GAMS Embedded Code Facility . While the GAMS Python API is provided for different version of Python, the Embedded Code Facility requires a Python 3.6 right now. The error message comes from the setup.py script...

Hello, There is currently no time schedule for updates of the Python version that is shipped with GAMS. It is primarily meant to be used as a minimal Python interpreter for certain GAMS features, especially the Embedded Code Python Facility. If there is a need for specific Python configurations, a s...

This is not possible right now. In order to get detailed information about an error it is required to have a look into the listing file or to examine the log output.

Best,
Clemens

The log output can be captured by specifying the output argument in GamsJob.run() . The following code snipped shows how to get the log output redirected to stdout: from gams import * import sys if __name__ == "__main__": if len(sys.argv) > 1: ws = GamsWorkspace(system_directory = sys.argv...