ValueError: string is not a file:

[Simontho001]

im trying to load in a urdf file into some simple code which is
from urdfpy import URDF robot= URDF.load("C:/Users/(put computer name here)/Desktop/python code/v2 robot arm - Copy/urdf/v2 robot arm - Copy.urdf")

but when i run it i get this error

ValueError: string is not a file: C:/Users/(put computer name here)/Desktop/python code/v2 robot arm - Copy/urdf\package://v2 robot arm - Copy/meshes/base_link.STL
how do i fix this?

[RitchieQi]

It means the directory of models provided in the .urdf doesn't exist. Check the directory of your mesh files.

[RayYoh]

i have the same error.

[RitchieQi]

i have the same error.

You could either modify the directory in your .urdf file or change the directory of your robot models.

[cedriclmenard]

@RitchieQi this issue seems to arise from using the package:// prefix, which is actually valid URDF description (see: http://wiki.ros.org/urdf/XML/link). Since urdfpy doesn't seem to support the package scheme, removing said prefix from the file path and thus using a relative path could be a possible workaround in urdfpy.

As a side note, see PR #2 for an implemented fix.