bl_info = {
    "name": "Save Selection",
    "author": "Markus Ewald",
    "version": (1, 0),
    "blender": (2, 7, 7),
    "location": "Object -> Tools -> Misc",
    "description": "Saves and restores vertex selections",
    #"warning": "20 Nov 2016",
    "wiki_url": "",
    "tracker_url": "",
    "category": "3D View"
}

import os
import bpy
import bmesh

mode_set = bpy.ops.object.mode_set

# Global variable to hold the list of selected vertex indices
vertex_selection = []

class SaveVertexSelectionOperator(bpy.types.Operator):
    """Remembers the indices of the currently selected vertices"""
    bl_idname = "object.save_vertex_selection"
    bl_label = "Short Name"

    def execute(self, context):
        global vertex_selection

        if bpy.context.object.mode == 'EDIT':
            bm = bmesh.from_edit_mesh(bpy.context.object.data)
            vertex_selection = [v.index for v in bm.verts if v.select]
        else:
            vertex_selection = [v.index for v in bpy.context.active_object.data.vertices if v.select]

        self.report({'INFO'}, "Saved selection of %d vertices" % len(vertex_selection))
        return {'FINISHED'}

class RestoreVertexSelectionOperator(bpy.types.Operator):
    """Reselects those vertices that have been remembered by the SaveVertexSelectionOperator"""
    bl_idname = "object.restore_vertex_selection"
    bl_label = "Short Name"

    def execute(self, context):
        global vertex_selection

        bpy.context.tool_settings.mesh_select_mode = (True , False , False)

        if bpy.context.object.mode == 'EDIT':
            bm = bmesh.from_edit_mesh(bpy.context.object.data)

            # Deselect everything
            for v in bm.verts:
                v.select = False
            for e in bm.edges:
                e.select = False
            for f in bm.faces:
                f.select = False

            # Restore saved selection
            for i in vertex_selection:
                bm.verts[i].select = True

        else:

            # Deselect everything
            for v in bpy.context.active_object.data.vertices:
                v.select = False
            for e in bpy.context.active_object.data.edges:
                e.select = False
            for p in bpy.context.active_object.data.polygons:
                p.select = False

            # Restore saved selection
            for i in vertex_selection:
                bpy.context.active_object.data.vertices[i].select = True

        self.report({'INFO'}, "Restored selection of %d vertices" % len(vertex_selection))
        return {'FINISHED'}

class VertexSelectionPanel(bpy.types.Panel):
    """Creates a Panel in the Object properties window"""
    bl_label = "Vertex Selection"
    bl_idname = "OBJECT_PT_clone_restore"
    bl_space_type = 'VIEW_3D'
    bl_region_type = 'TOOLS'

    def draw(self, context):
        layout = self.layout

        obj = context.object
        col = layout.column()

        col.operator("object.save_vertex_selection", text='Save Selection')
        col.operator("object.restore_vertex_selection", text='Restore Selection')

def register():
    bpy.utils.register_module(__name__)

def unregister():
    bpy.utils.unregister_module(__name__)

if __name__ == "__main__":
    register()