Blender Python script to improve function separate by loose parts

separate_by_parts.py

import bpy


# edit mode
bpy.ops.object.mode_set(mode='EDIT')

# TODO: lookup if disable window for script run is worth it

for #loop
# TODO: lookup if for loop or while loop is quicker

    # select one Vertex
    bpy.ops.mesh.select_vert_edge_face_index(select_type='VERT')

    # select linked
    bpy.ops.mesh.select_linked()

    # get number of selected vertices

    selectedVertices = 

    # lookup if last part

    if selectedVertices = allVertices:
        #abort

    # separate vertices
    bpy.ops.mesh.separate(type= 'SELECTED')

    #get number of all vertices

    allVertices =