Python Beginner: Trim Circle

Grasshopper Developer
1

Does anyone know why this bit of code inside a custom python component does not work?

 for i in range(len(circles)):
        domain = rs.CurveDomain(circles[i])
        domain[1] /= 2.0
        circles[i] = rs.TrimCurve(circles[i], domain)

Trying to trim a circle but it keeps returning:

Runtime error (NullReferenceException): Object reference not set to an instance of an object.

Traceback (most recent call last):
SystemError: Object reference not set to an instance of an object.
2

hard to tell without your file. the NullReferenceException is usually not your script but some set up problem
here I’ve pretty much re-typed your code verbatim and it’s fine…

forum-circletrim.gh (3.1 KB)

3

Lost the script I was working on so I guess I’ll never know what I did wrong but thanks!