Hi,
We are not aware of a conversion tool or script to do this. Sorry. Maybe someone from the community knows more.
I guess you will have to do it by hand. However, our Python API is very intuitive and easy to use. Additionally, we recently added a lot of nice methods that make modeling much easier. As a starting point you might want to take a look at our examples. Here you can find a nice introduction:
http://www.gurobi.com/documentation/7.0/quickstart_linux/py_python_interface.html
Best regards,
Sonja
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Dr. Sonja Mars
Gurobi Optimization - Technical Support