Trouble with __init__.py loading addon with multple files

Question

I've written a custom addon for a few Pie menus but can't figure out how to load them together from a __init.py

Currently they are all split into these four files:

PIE_context.py, PIE_mode.py, PIE_uvcontext.py, PIE_uvmode.py

They all work when installed on their own, register shortcuts and everything. Despite reading around I can't figure out how to import them together from the __init__.py file below. The shortest of the four PIE_uvcontext.pyis below that:

bl_info = {
    "name": "Context Pie",
    "blender": (2, 80, 0),
    "category": "User Interface",
    "version": (0, 1, 0, 0),
    "location": "UV Editor, View3D, Mesh, Curve",
}
Blender imports
import bpy
#from bpy.props import *
from . import PIE_context
from . import PIE_mode
from . import PIE_uvcontext
from . import PIE_uvmode
addon_keymaps = []
def register():
PIE_context.register()
PIE_mode.register()
PIE_uvcontext.register()
PIE_uvmode.register()


def unregister():
PIE_context.unregister()
PIE_mode.unregister()
PIE_uvcontext.unregister()
PIE_uvmode.unregister()


if name == "main":
    register()

bl_info = {
    "name": "UV Pie: 'Shift + Right Mouse'",
    "description": "UV Pie Menu",
    "version": (0, 1, 2),
    "blender": (2, 80, 0),
    "location": "UV Editor",
    "category": "Pie Menu"}

import bpy
from bpy.types import (
    Header,
    Menu,
    Panel,
)
from bpy.app.translations import contexts as i18n_contexts

# Reference context menu: IMAGE_MT_uvs_context_menu
class IMAGE_PIE_MT_uvContext(Menu):
    bl_label    = ""

    def draw(self, context):
        layout = self.layout
        layout.operator_context = 'INVOKE_REGION_WIN'
        pie = layout.menu_pie()

        # WEST
        pie.operator("uv.pin").clear = False
        # EAST
        pie.operator("uv.pin", text='Unpin').clear = True
        # SOUTH
        pie.operator("uv.minimize_stretch")
        # NORTH
        pie.operator("uv.unwrap")
        # NORTH-WEST
        pie.operator("uv.pack_islands")
        # NORTH-EAST
        pie.operator("uv.average_islands_scale")
        # SOUTH-WEST
        pie.operator("mesh.mark_seam", text='Mark Seam').clear = False
        # SOUTH-EAST
        pie.operator("mesh.mark_seam", text='Clear Seam').clear = True

        # Static face menu
        pie.separator()
        pie.separator()

        dropdown = pie.column()
        gap = dropdown.column()
        gap.separator()
        gap.scale_y = 8

        dropdown_menu = dropdown.box().column()
        dropdown_menu.scale_y=1

        dropdown_menu.operator("uv.stitch")
        dropdown_menu.operator("uv.weld")
        dropdown_menu.operator("uv.remove_doubles")


classes = [
    IMAGE_PIE_MT_uvContext]

addon_keymaps = []

def register():
    for cls in classes:
        bpy.utils.register_class(cls)

    wm = bpy.context.window_manager
    if wm.keyconfigs.addon:
        km = wm.keyconfigs.addon.keymaps.new(name='UV Editor')
        kmi = km.keymap_items.new('wm.call_menu_pie', 'RIGHTMOUSE', 'PRESS', shift=True)
        kmi.properties.name = "IMAGE_PIE_MT_uvContext"
        addon_keymaps.append((km, kmi))

def unregister():
    for cls in classes:
        bpy.utils.unregister_class(cls)

    wm = bpy.context.window_manager
    kc = wm.keyconfigs.addon
    if kc:
        for km, kmi in addon_keymaps:
            km.keymap_items.remove(kmi)
    addon_keymaps.clear()

if __name__ == "__main__":
    register()

Thanks!

Answer 1

Answered by @batFINGER in comment:

Just had to zip the folder with files in! Trying to make a menu using multiple modules