ekko.py

import bpy
from bpy.props import StringProperty, EnumProperty
from sverchok.node_tree import SverchCustomTreeNode
from sverchok.data_structure import (updateNode, enum_item as e)


NODE_TEMPO = True

node_details = {}

def make_ugen_class(name, node_details):
    generated_classname = "SvNP" + name
    return type(generated_classname, (SvNumpyBaseNode,), node_details[name])


class SvNumpyBaseNode(bpy.types.Node, SverchCustomTreeNode):
    bl_idname = ""
    bl_label = ""
    
    def draw_buttons(self, context, layout):
        layout.prop(self, 'sig')


def augment_node_dict(name, extend_dict):
    node_details[name] = {"bl_idname": "SvNP" + name, "bl_label": name.title()}
    node_details[name].update(extend_dict)


if NODE_TEMPO:
    
    def sv_init2(self, context):
        self.inputs.new("StringsSocket", "Illu2")
        self.outputs.new("StringsSocket", "Illu2")

    def process(self):
        si = self.inputs
        so = self.outputs


    
    T = ['MESH', 'CURVE', 'SURFACE']
    tempo_dict = {
        'sig': EnumProperty(default='MESH', items=e(T), update=updateNode),
        'sv_init': sv_init2,
        'process': process
    }

    augment_node_dict('tempo2', tempo_dict)





classes = [make_ugen_class(name, node_details) for name in node_details.keys()]


def register():
    _ = [bpy.utils.register_class(name) for name in classes]


def unregister():
    _ = [bpy.utils.unregister_class(name) for name in classes]



register()
nodes = bpy.data.node_groups['NodeTree'].nodes
nodes.new('SvNPtempo2')