Originally posted by: DhawalT

Hi,

I am usually used to model using CPLEX, haven't explored or branched out of my comfort zone. Now, the need has arose for me to code my model in Python. So kindly help with a suitable package which will enable me to solve my model which is in CP and also open source. Some documentation about understanding that language will also be of great help to me.

Thank you

Regards

Dhawal Thakkar

Hi,

You have 2 CPLEX python APIs:

• https://developer.ibm.com/docloud/documentation/optimization-modeling/modeling-for-python/
• https://www.ibm.com/support/knowledgecenter/en/SSSA5P_12.7.1/ilog.odms.cplex.help/refpythoncplex/html/frames.html

But you could also call OPL from Python

• https://www.ibm.com/developerworks/community/forums/html/topic?id=0b6cacbe-4dda-4da9-9282-f527c3464f47&ps=25
• https://www.ibm.com/developerworks/community/forums/html/topic?id=306f3ded-33b8-4d9a-8568-b4288aa64265&ps=25

regards

Originally posted by: DhawalT

Hey

Thanks Alex

I went through the links that you sent me. The thing is I am not very fluent with coding and have no experience in coding besides using CPLEX. I have developed mathematical models in CPLEX. Now, the need has arose for me to learn python. A simple tutorial as to how to convert my CPLEX code into python code will do. I am using constraint programming in my CPLEX model. I am finding it a bit difficult to understand from the links that you helped me with. I need to go around with open source solvers that can run my model.

I will be really grateful if you could help me with it. I genuinely have no other source to learn this stuff from.

Thanks

Regards

Hi,

are you aware of CPLEX community edition that is free ?

https://www-01.ibm.com/software/websphere/products/optimization/cplex-studio-community-edition/

regards

Originally posted by: DhawalT

yes i am using it currently

but i need to now code it in python

hence asking

Originally posted by: DhawalT

Does PuLP help in solving constraint programming problems?

If it does, it might solve my issue

Hi,

Have you had a look at http://ibmdecisionoptimization.github.io/docplex-doc/cp/samples.html

?

regards

Originally posted by: DhawalT

Hi

Is it open source? No Licensing issues?

Regards

See the Apache license at

https://pypi.python.org/pypi/docplex

and some intro at

https://cdn.rawgit.com/IBMDecisionOptimization/docplex-doc/master/docs/index.html?cm_mc_uid=56329990040415039023459&cm_mc_sid_50200000=1507189366

regards

Originally posted by: DhawalT

Seems good

Let me see if i can work along with it and maybe then get back to you

Thanks o ton Alex, you have been of great help

Thanks

Regards