How to add geometry nodes with python

Question

I create a modifiers who's type is NODES, and run bpy.ops.node.new_geometry_node_group_assign() to create a geometry node groups

but when i run bpy.ops.node.add_node(use_transform=True, type="GeometryNodeMeshToCurve")

it throw RuntimeError: Operator bpy.ops.node.add_node.poll() failed, context is incorrect

beacuse of some reason, I can't open Node Editor window.

Is there a method to implement this operation?

For specific geometry nodes tool，please refer to the second answer to my previous question smoothly bridge loop edge

the code i create modifiers and node groups:

obj = bpy.context.active_object
modifier = obj.modifiers.new(name="Resample", type='NODES')
bpy.ops.node.new_geometry_node_group_assign()