How to create 45-degree track corners programmatically in KiCad using Python?
Creating 45-degree track corners programmatically in KiCad can be done using Python scripting. The provided script includes an example of this by routing a track with a 45-degree corner:

```python
import pcbnew
from pcbnew import wxPoint, wxPointMM

def add_track(start, end, layer=pcbnew.F_Cu):
    board = pcbnew.GetBoard()
    track = pcbnew.PCB_TRACK(board)
    track.SetStart(start)
    track.SetEnd(end)
    track.SetWidth(int(0.25 * 1e6))
    track.SetLayer(layer)
    board.Add(track)

board = pcbnew.GetBoard()
start = board.FindFootprintByReference('R1').FindPadByNumber('1').GetCenter()
end = board.FindFootprintByReference('D1').FindPadByNumber('1').GetCenter()
offset = end.x - start.x
thru = pcbnew.wxPoint(start.x, end.y - offset)
add_track(start, thru)
add_track(thru, end)

pcbnew.Refresh()
```

This script is particularly helpful for designs where specific track angles are required for signal integrity or layout constraints.