Using pyautocad AddArc instruction doesn't seem to support the three point method arc, as follows:
P1=APoint (x1, y1)
The p2=APoint (x2, y2)
P3=APoint (x3, y3)
Acad tools. Model. AddArc (p1, p2, p3)
Can not run, online AddArc illustrate three point method is useless, Montana did understand guidance, thank you very much!