blender armature copy bones to armature bone

blendercopyarmture.py

import bpy
#source_rig = 'MBlab_sk'
#dest_rigs = ['Armature']
############
bone_data = {}
selectobjname = None

def edit_rig(rigname):    
    bpy.ops.object.mode_set(mode='OBJECT')
    bpy.ops.object.select_all(action='DESELECT')
    bpy.data.objects[rigname].select_set(state=True)
    bpy.context.view_layer.objects.active = bpy.data.objects[rigname]
    bpy.ops.object.mode_set(mode='EDIT')

def build_rig():
    #Get Armature bone to add bone list
    for b in bpy.data.objects[selectobjname].data.edit_bones:
        #print(b.name)
        #print(dir(b))
        #print((b.parent))
        if b.parent != None:
            #Store data, parent name as string
            bone_data[b.name] = (b.head.copy(), b.tail.copy(), b.roll, b.parent.name)
        else:
            #None if case there bone parent to store in the bone data
            bone_data[b.name] = (b.head.copy(), b.tail.copy(), b.roll, None)

    bpy.ops.object.mode_set(mode='OBJECT')

    #Create Armture    
    nameobj = "skel"
    pivot_bone = bpy.data.armatures.new(nameobj)
    #Create Object Armture
    object = bpy.data.objects.new(nameobj, pivot_bone)
    #Add Object to Scene Collection
    bpy.context.scene.collection.objects.link(object)
    #deselct all object
    bpy.ops.object.select_all(action='DESELECT')
    #Set active object
    bpy.context.view_layer.objects.active = object
    bpy.ops.object.mode_set(mode='EDIT')
    edit_bones = pivot_bone.edit_bones
    #print(dir(pivot_bone))
    for b in bone_data:
        #print(b)
        #Create Bone
        bone = edit_bones.new(b)
        head, tail, roll, parent = bone_data[b]
        bone.head = head
        bone.tail = tail
        bone.roll = roll
        #print("Bone:", b)
        #print("PARENT:", parent)
        if parent != None:
            #print(parent)
            #print(edit_bones[parent])
            #print(pivot_bone.bones[parent])
            #bone.parent = pivot_bone.bones[parent]
            bone.parent = edit_bones[parent]

    bpy.ops.object.mode_set(mode='OBJECT')
    
#print(bpy.context.view_layer.objects.active.name)
selectobjname = bpy.context.view_layer.objects.active.name

edit_rig(selectobjname)

build_rig()