[Blender] Blenderのスクリプトを複数ファイルに分割する ref: http://qiita.com/nutti/items/35e7f79f8683fc79eda8

__init__.py

bl_info = {
# ...
}

if "bpy" in locals():
    import imp
    imp.reload(op1)
    imp.reload(op2)
else:
    from . import op1
    from . import op2

import bpy

def menu_func(self, context):
    self.layout.separator()
    self.layout.menu(op1.Operator_1.bl_idname)
    self.layout.menu(op2.Operator_2.bl_idname)


def register():
    bpy.utils.register_module(__name__)
    bpy.types.VIEW3D_MT_uv_map.append(menu_func)

def unregister():
    bpy.utils.unregister_module(__name__)
    bpy.types.VIEW3D_MT_uv_map.remove(menu_func)


if __name__ == "__main__":
    register()

all_in_one.py

import bpy

bl_info = {
# ...
}

class Operator_1(bpy.types.Operator):
    bl_idname = "uv.operator_1"
    bl_label = "Operator 1"
    file_name = "hoge.blend"

    def execute(self, context):
        return{'FINISHED'}

class Operator_2(bpy.types.Operator):
    bl_idname = "uv.operator_2"
    bl_label = "Operator 2"

    def execute(self, context):
        self.report({'INFO'}, Operator_1.file_name)
        return{'FINISHED'}



def menu_func(self, context):
    self.layout.separator()
    self.layout.menu(Operator_1.bl_idname)
    self.layout.menu(Operator_2.bl_idname)


def register():
    bpy.utils.register_module(__name__)
    bpy.types.VIEW3D_MT_uv_map.append(menu_func)

def unregister():
    bpy.utils.unregister_module(__name__)
    bpy.types.VIEW3D_MT_uv_map.remove(menu_func)


if __name__ == "__main__":
    register()

op1.py

import bpy

class Operator_1(bpy.types.Operator):
    bl_idname = "uv.operator_1"
    bl_label = "Operator 1"
    file_name = "hoge.blend"

    def execute(self, context):
        return{'FINISHED'}

op2.py

import bpy
from . import op1

class Operator_2(bpy.types.Operator):
    bl_idname = "uv.operator_2"
    bl_label = "Operator 2"

    def execute(self, context):
        self.report({'INFO'}, op1.Operator_1.file_name)
        return{'FINISHED'}