関連ワード:  nameerror name random is not defined    python name random is not defined    nameerror name generator is not defined    python nameerror name random is not defined    nameerror name random_split is not defined    nameerror name random_state is not defined    nameerror name random_string is not defined    nameerror name train_generator is not defined    error name random is not defined    how to fix nameerror name is not defined