Search found 59 matches
- 5 years ago
- Forum: API
- Topic: GAMS PYTHON API - INTERFACE JUPYTER
- Replies: 7
- Views: 9381
Re: GAMS PYTHON API - INTERFACE JUPYTER
Hi, When calling the GamsWorkspace constructor, the API tries to find a valid GAMS system directory. The exact mechanism for this is depending on the operating system. If you want to specify a system directory explicitly you can do this by providing the named argument system_directory : GamsWorkspac...
- 5 years ago
- Forum: API
- Topic: GAMS API Python
- Replies: 7
- Views: 10131
Re: GAMS API Python
Hello, The ws.gamslib call tries to find the model Artigo_LJ1 in the GAMS Model Library and can not find it. If you want to create a GamsJob from a specific file you need to use ws.add_job_from_file (https://www.gams.com/latest/docs/apis/python/classgams_1_1workspace_1_1GamsWorkspace.html#af1e83abb0...
- 5 years ago
- Forum: Tools
- Topic: MySQL, GAMS and Unix
- Replies: 3
- Views: 3546
Re: MySQL, GAMS and Unix
Renger,
Neither the Object-Oriented Python API nor the Embedded Code facility is currently available for Python 3.7. At least the Object-Oriented API will (at some point of time) support Python 3.7. The Embedded Code facility might follow then.
Best,
Clemens
Neither the Object-Oriented Python API nor the Embedded Code facility is currently available for Python 3.7. At least the Object-Oriented API will (at some point of time) support Python 3.7. The Embedded Code facility might follow then.
Best,
Clemens
- 5 years ago
- Forum: Tools
- Topic: MySQL, GAMS and Unix
- Replies: 3
- Views: 3546
Re: MySQL, GAMS and Unix
Renger, Using Embedded Code is in my opinion a good idea. You save the extra Python file and you could do it without writing the CSV file. Something like this: parameter p(*,*); $onEmbeddedCode Python: import pandas as pd data = [('a', 'a', 2), ('a','b', 4), ('b', 'a', 1), ('b','b', 3)] df = pd.Data...
- 5 years ago
- Forum: API
- Topic: Embedded Python code - Import parameter with gams.get
- Replies: 2
- Views: 5242
Re: Embedded Python code - Import parameter with gams.get
Luis, First of all, note that the assignment ParA = 5; happens during GAMS execution time and the $onEmbeddedCode/$offEmbeddedCode section is performaned during GAMS compilation time. That means that in the embedded code section, no value will be assigned to ParA . For more information about GAMS ex...
- 5 years ago
- Forum: API
- Topic: Fastest interaction between GAMS and Python
- Replies: 2
- Views: 4825
Re: Fastest interaction between GAMS and Python
Serge, 1) Loading a model form string or from file is very unlikely to make any difference in terms of performance. In any case a GamsJob will result in a file containing the source code when the run() method is called. 2) This depends on your specific situation. If large parts of the GamsDatabase r...
- 5 years ago
- Forum: API
- Topic: GAMS API Python
- Replies: 7
- Views: 10131
Re: GAMS API Python
Then it was perhaps a mismatch in the version of the Python API and the Python interpreter. Both the bitness as well as the version (2.7, 3.6 etc) need to match. Good to hear that you got it working. You have probably seen the tutorial already, but in case you did not, here it is: https://www.gams.c...
- 5 years ago
- Forum: API
- Topic: GAMS API Python
- Replies: 7
- Views: 10131
Re: GAMS API Python
Hi, The error is most likely caused by a bitness mismatch of your GAMS version including the Python API and your version of Python itself. Please double check your Python version if it is really 32 bit by just launching the live interpreter on the command line and looking at the output. Regarding th...
- 6 years ago
- Forum: API
- Topic: _gdxcc.so issue
- Replies: 3
- Views: 6548
Re: _gdxcc.so issue
David, The file _gdxcc.so is required by the Object-oriented Python API. GAMS distributes different version of the file for the different API versions (Python 2.7, 3.6, etc.) and one version which is located directly in the GAMS system directory ( /Applications/GAMS25.0/sysdir/ ). This version of th...
- 6 years ago
- Forum: API
- Topic: Is there any tutorial about the connection between python and gams?
- Replies: 1
- Views: 4118
Re: Is there any tutorial about the connection between python and gams?
Hi, GAMS offers basically two technologies for combining Python and GAMS. The GAMS Object-oriented Python API offers a Python interface for interacting with GAMS. For further information, please have a look at the documentation which also provides a tutorial: https://www.gams.com/latest/docs/API_PY_...