No module named 'gurobipy'

The error message "No module named 'gurobipy'" indicates that the Gurobi Python package is not installed or cannot be found in your current environment. Gurobi is a commercial optimization solver, and you need to install it separately to use it in Python.

To resolve this issue, you can follow these steps:

1. Make sure you have a valid Gurobi license. If you don't have one, you can request an academic license or a free trial license from the Gurobi website.

2. Install the Gurobi optimizer package using the appropriate installation method for your operating system. You can find the installation instructions and packages on the Gurobi website.

3. After installing Gurobi, you need to set up the Gurobi Python interface. This typically involves adding the Gurobi binaries to your system's PATH environment variable and setting up the GUROBI_HOME environment variable. Again, you can find detailed instructions for your specific operating system on the Gurobi website.

4. Finally, you need to install the Gurobi Python package by running the following command in your terminal or command prompt:

   pip install gurobipy

Make sure you have pip installed and it is associated with the Python version you intend to use.

Once you have completed these steps, you should be able to import the `gurobipy` module without any issues.