import bpy def read_some_data(context, filepath, use_some_setting): print("running read_some_data...") f = open(filepath, 'r', encoding='utf-8') data = f.read() f.close() # would normally load the data here print(data) return {'FINISHED'} # ImportHelper is a helper class, defines filename and # invoke() function which calls the file selector. from bpy_extras.io_utils import ImportHelper from bpy.props import StringProperty, BoolProperty, EnumProperty from bpy.types import Operator class ImportSomeData(Operator, ImportHelper): """This appears in the tooltip of the operator and in the generated docs""" bl_idname = "import_test.some_data" # important since its how bpy.ops.import_test.some_data is constructed bl_label = "Import Some Data" # ImportHelper mixin class uses this filename_ext = ".txt" filter_glob = StringProperty( default="*.txt", options={'HIDDEN'}, ) # List of operator properties, the attributes will be assigned # to the class instance from the operator settings before calling. use_setting = BoolProperty( name="Example Boolean", description="Example Tooltip", default=True, ) type = EnumProperty( name="Example Enum", description="Choose between two items", items=(('OPT_A', "First Option", "Description one"), ('OPT_B', "Second Option", "Description two")), default='OPT_A', ) def execute(self, context): return read_some_data(context, self.filepath, self.use_setting) # Only needed if you want to add into a dynamic menu def menu_func_import(self, context): self.layout.operator(ImportSomeData.bl_idname, text="Text Import Operator") def register(): bpy.utils.register_class(ImportSomeData) bpy.types.INFO_MT_file_import.append(menu_func_import) def unregister(): bpy.utils.unregister_class(ImportSomeData) bpy.types.INFO_MT_file_import.remove(menu_func_import) if __name__ == "__main__": register() # test call bpy.ops.import_test.some_data('INVOKE_DEFAULT')