Blender Addon Pie Menu with Hotkey – Add Shortcut

This code shows you how can you create a pie menu with a hotkey so you can start your customized pie menu under your Blender add-on. A Pie menu is especially needed in the 3D View window while 3D artists create a new model.

Scripting –> Templates –> Python –> UI Pie Menu

Although there are many examples of creating a pie menu in your Blender add-on or your plugin most of them add hotkey their pie menus manually. If you want to add your hotkey to your pie menu you just need to register your hotkeys.

  #Addon shortcuts
    wm = bpy.context.window_manager
    kc = wm.keyconfigs.addon
    if kc:
        km = wm.keyconfigs.addon.keymaps.new(name='3D View', space_type='VIEW_3D')
        kmi = km.keymap_items.new("wm.call_menu_pie", type='V', value='PRESS', shift=True)
        kmi.properties.name = 'VIEW3D_MT_PIE_template'
        addon_keymaps.append((km, kmi))

Nearly every button click can be implemented in the blender scripting so first of all for creating a new hotkey we need to reach preferences we need wm = bpy.context.window_manager after creating new keymaps for 3D View we need
km = wm.keyconfigs.addon.keymaps.new(name='3D View', space_type='VIEW_3D') after creating a new section for keymap now we can describe our shortcut properties kmi = km.keymap_items.new("wm.call_menu_pie", type='V', value='PRESS', shift=True) this line makes our hotkey can be available with "wm.call_menu_pie" the command. Now we just need to describe our specific kmi.properties.name = 'VIEW3D_MT_PIE_template' class VIEW3D_MT_PIE_template(Menu)’s bl_idaname.

Edit–> Preferences–> Keymap –> Select Mode

Full code of the pie menu addon

import bpy
from bpy.types import Menu

# spawn an edit mode selection pie (run while object is in edit mode to get a valid output)


class VIEW3D_MT_PIE_template(Menu):
    # label is displayed at the center of the pie menu.
    bl_idanme = 'VIEW3D_MT_PIE_template'
    bl_label = "Select Mode"

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

        pie = layout.menu_pie()
        # operator_enum will just spread all available options
        # for the type enum of the operator on the pie
        pie.operator_enum("mesh.select_mode", "type")
        pie.operator("mesh.primitive_cube_add", text="Add Cube", icon='MESH_CUBE')

       

addon_keymaps = []
def register():
    bpy.utils.register_class(VIEW3D_MT_PIE_template)
    
    #Addon shortcuts
    wm = bpy.context.window_manager
    kc = wm.keyconfigs.addon
    if kc:
        km = wm.keyconfigs.addon.keymaps.new(name='3D View', space_type='VIEW_3D')
        kmi = km.keymap_items.new("wm.call_menu_pie", type='V', value='PRESS', shift=True)
        kmi.properties.name = 'VIEW3D_MT_PIE_template'
        addon_keymaps.append((km, kmi))



def unregister():
    bpy.utils.unregister_class(VIEW3D_MT_PIE_template)
    for km,kmi in add_keymaps:
        km.keymap_item.remove(kmi)
    addon_keymaps.clear()


if __name__ == "__main__":
    register()

    #bpy.ops.wm.call_menu_pie(name="VIEW3D_MT_PIE_template")

Detailed YouTube Video