AttributeError:'tuple' object has no attribute 'rank'

[fernandorannou]

Requirements

• Reviewed ESMPy Documentation
• Searched GitHub Discussions

Affiliation(s)

Universidad de Santiago de Chile

ESMF Version

esmpy

Issue

Hello
I'm getting the following error when creating a field on a mesh:
Traceback (most recent call last):
File "/home/rannou/Project/regrid.py", line 205, in
sphfield = esmpy.Field(sphmesh, name='sphmesh', meshloc=esmpy.MeshLoc.NODE)
File "/home/rannou/VirtualEnvironments/esmpy/lib/python3.10/site-packages/esmpy/util/decorators.py", line 59, in new_func
return func(*args, **kwargs)
File "/home/rannou/VirtualEnvironments/esmpy/lib/python3.10/site-packages/esmpy/api/field.py", line 87, in init
rank = grid.rank
AttributeError: 'tuple' object has no attribute 'rank'

The python lines are:
sphmesh = create_2D_sph_mesh(rcorner, thetacorner)
sphfield = esmpy.Field(sphmesh, name='sphmesh', meshloc=esmpy.MeshLoc.NODE)

As far as I can tell the mesh has been successfully created. The esmpy documentation says:
property rank
Return type
int
Returns
The rank of the Mesh, (i.e. always 1).

I appreciate any suggestions. Thanks

Fer

Autotag

@billsacks

[billsacks]

My first guess is that your create_2D_sph_mesh function is not actually returning an ESMPy mesh object but instead is returning a tuple. What do you get if you run this?:

type(sphmesh)

You should get:

esmpy.api.mesh.Mesh

You might also want to compare your code and result with the example here:

https://earthsystemmodeling.org/esmpy_doc/release/latest/html/examples.html#create-a-5-element-mesh

[fernandorannou]

Thanks for your help. I was returning a mesh plus other objects, but I forgot to list them all on the function call.
Now it works ok.

sphmesh, nodeCoord, nodeOwner, elemType, elemConn, elemCoord = create_2D_sph_mesh(rcorner, thetacorner)

Fer