Kernelcreation functions take different assignment types
The documentation for the create_indexed_kernel(assignments: List[Assignment], *, config: CreateKernelConfig): function has typehints for the assignments that are different to what the docstring says assignments: can be a single assignment, sequence of assignments or an AssignmentCollection.
The same is true for create_domain_kernel but i also did not check every single one of them.
Independently of that mismatch to me as a user it was suprising that the different kernel creation functions take different types of assignments. Since i mostly work with create_kernel i was used to use the AssignmentCollections which don't seem to work for the other functions.
The script i tried to use for the indexed kernel
import pystencils as ps
rho = ps.fields("rho :[3D]", layout='zyxf')
collection = ps.AssignmentCollection(main_assignments=[ps.Assignment(rho.center, 1.0)])
config = ps.CreateKernelConfig()
assignments = ps.create_indexed_kernel(assignments=collection, config=config)If you don't feel like this is an issue, feel free to close it.