change python scripts so modules which register with blender have a register() function rather then making import automatically run the register functions (generally considered bad practice by python people)

release/scripts/io/export_obj.py

@@ -958,16 +958,20 @@ class ExportOBJ(bpy.types.Operator):
         wm.add_fileselect(self)
         return {'RUNNING_MODAL'}
 
-bpy.types.register(ExportOBJ)
 
 def menu_func(self, context):
     default_path = bpy.data.filename.replace(".blend", ".obj")
     self.layout.operator(ExportOBJ.bl_idname, text="Wavefront (.obj)...").path = default_path
 
-menu_item = bpy.types.INFO_MT_file_export.append(menu_func)
 
-if __name__ == "__main__":
-    bpy.ops.EXPORT_OT_obj(filename="/tmp/test.obj")
+def register():
+    bpy.types.register(ExportOBJ)
+    bpy.types.INFO_MT_file_export.append(menu_func)
+    
+def unregister():
+    bpy.types.unregister(ExportOBJ)
+    bpy.types.INFO_MT_file_export.remove(menu_func)
+
 
 # CONVERSION ISSUES
 # - matrix problem