# 2.8.1: Hello Karamba3D
In order to get started with Python3 scripting in Grasshopper place a "Python 3 Script"-component on the canvas. Details regarding its functionality can be found [here](https://developer.rhino3d.com/guides/scripting/scripting-gh-python/).
Fig. 2.8.1.1: A minimal K3D-model for retrieving the number of elements, materials and cross sections via Python 3.
When Karamba3D is installed in your Grasshopper the following code retrieves properties of a Karamba3D model:
```
import Karamba
model = Model_in;
if not isinstance(model, Karamba.Models.Model):
raise Exception("The input is not of type 'Model'")
print(f"Number of Elements: {model.elems.Count}")
print(f"Number of Materials: {model.materials.Count}")
print(f"Number of Cross sections: {model.crosecs.Count}")
```
The source code is explained in [section 2.1](https://scripting.karamba3d.com/2.-scripting-with-karamba3d-inside-grasshopper/2.1-hello-karamba3d).
{% file src="" %}
