Extract 3D seam coordinates from I have a .obj file with accompanying .mtl file and texture files. I want to extract the coordinates of the seams on my mesh. I then want to plot these seams in a 3D matrix in Python. Is there a fast way to do that?

Further clarification: I have found a way recreate my mesh in my Python IDE using a library called Pymesh. I now want to plot the seams of my mesh (the ones that will give me the unwrap that I have in my texture files) in a 3D matrix as well. One way I could do this is to write a script that takes the edge points of all my UV islands, and then searches the .obj file for the 3D coordinates that they map to (and translate that into coordinates appropriate for my 3D matrix in Python). 
That will take a long time though - is there a faster way?
I also asked this in the Blender StackExchange as I wasn't sure which was more appropriate. 

Thank you!
A seam can be defined as a line along the mesh where the vertices are doubled each with different texture coordinates.

So that's what you should look for. The set of vertices where there is a twin in the same position with different texture coordinates.

Depending on how the obj file was built that will be simple if they didn't duplicate the position when a vertex became part of a seam. Or it's not as simple because you need to deduplicate positions again.