How can I access different PCB layers like copper and silkscreen in KiCad using Python?
Accessing different PCB layers such as copper and silkscreen in KiCad can be achieved using Python scripting. The script snippet provided demonstrates how to reference these layers using the pcbnew module:

```python
import pcbnew

front_copper = pcbnew.F_Cu
back_copper = pcbnew.B_Cu
front_silk = pcbnew.F_SilkS
back_silk = pcbnew.B_SilkS
```

This approach is useful for scripts that need to interact with specific layers of a PCB, such as creating or modifying layer-specific features like tracks, pads, or silkscreen elements.