How to change the width of a track in KiCad using Python?
To change the width of a track in KiCad using Python, you can use the pcbnew module. Here's an example script:

```python
import pcbnew

# Load the current board
board = pcbnew.GetBoard()

# Find the track (assuming first track in the list)
track = board.GetTracks()[0] if board.GetTracks() else None

# Check if the track exists
if track:
    # Change the track width (in nanometers)
    new_width = 1000000 # 1 mm in nanometers
    track.SetWidth(new_width)
    board.Save('path/to/save/your/pcb.kicad_pcb')
else:
    print('Track not found')
```

This script changes the width of the first track found on the current PCB.