Worth spreading

argparse에서 parser 사용시 다음과 같은 에러 발생 usage: ipykernel_launcher.py [-h]ipykernel_launcher.py: error: unrecognized arguments: --lrAn exception has occurred, use %tb to see the full traceback. SystemExit: 2 /Users/username/lib/python3.6/site-packages/IPython/core/interactiveshell.py:2971: UserWarning: To exit: use 'exit', 'quit', or Ctrl-D. warn("To exit: use 'exit', 'quit', or Ctrl-D.", stacklevel=1..