Problem in selecting and creating a set of edges at one end of it in Python

[frztrb]

Hi All

I am writing a python script and I have a 3D shell model and I want to select the edges on one end of it , like the end of extrusion direction , so I used the pointsOn , and had the random point on the all of the edges , then I got the vertices of these edges , compared and for the right edges , used the findAt to create the edge , but unfortunately I could not grab one of the edges on this side , I dont know why , despite there was another edge exactly with the same condition , I could not get that edge , actually with those coordinates that I get from pointsOn and enter in findAt , I do not get the right edge , it's like abaqus selects another edge

do you have any idea how I can correct this ?

I would really appreciate it