[英]Unrecognized arguments exception when importing from Python script in Jupyter notebook
我不确定这是一个错误还是我做错了什么。
我有一个独立的 python 脚本,它使用 argparse 从命令行启动。
我把它弄傻了一点,但这本质上是脚本:
测试.py
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-i", "--inputfile", type=str, default=None,
help="filename containing input data")
parser.add_argument("-o", "--outputfile", type=str, default=None,
help="filename to save output data to")
args = parser.parse_args()
def step_test_experiment(inputs_filename=None, outputs_filename=None):
print(inputs_filename, outputs_filename)
if __name__ == '__main__':
if args.outputfile is None:
outputs_filename = "tclab_dyn_data.csv"
else:
outputs_filename = args.outputfile
step_test_experiment(args.inputfile, outputs_filename)
当我在 Jupyter 笔记本中尝试以下操作时:
from test import step_test_experiment
我得到:
usage: ipykernel_launcher.py [-h] [-i INPUTFILE] [-o OUTPUTFILE]
ipykernel_launcher.py: error: unrecognized arguments: -f /Users/billtubbs/Library/Jupyter/runtime/kernel-df168fd5-a7f9-4258-b106-0e4582601e79.json
An exception has occurred, use %tb to see the full traceback.
SystemExit: 2
//anaconda3/envs/torch/lib/python3.7/site-packages/IPython/core/interactiveshell.py:3334: UserWarning: To exit: use 'exit', 'quit', or Ctrl-D.
warn("To exit: use 'exit', 'quit', or Ctrl-D.", stacklevel=1)
%tb
产生:
---------------------------------------------------------------------------
SystemExit Traceback (most recent call last)
<ipython-input-1-14c395429157> in <module>
----> 1 from test import step_test_experiment
~/dd-temp-control/test.py in <module>
6 parser.add_argument("-o", "--outputfile", type=str, default=None,
7 help="filename to save output data to")
----> 8 args = parser.parse_args()
9
10
//anaconda3/envs/torch/lib/python3.7/argparse.py in parse_args(self, args, namespace)
1750 if argv:
1751 msg = _('unrecognized arguments: %s')
-> 1752 self.error(msg % ' '.join(argv))
1753 return args
1754
//anaconda3/envs/torch/lib/python3.7/argparse.py in error(self, message)
2499 self.print_usage(_sys.stderr)
2500 args = {'prog': self.prog, 'message': message}
-> 2501 self.exit(2, _('%(prog)s: error: %(message)s\n') % args)
//anaconda3/envs/torch/lib/python3.7/argparse.py in exit(self, status, message)
2486 if message:
2487 self._print_message(message, _sys.stderr)
-> 2488 _sys.exit(status)
2489
2490 def error(self, message):
SystemExit: 2
看起来 Jupyter kernel 在加载脚本时添加了一个“-f”参数。
任何想法是什么原因造成的?
如果,正如你在评论中所说,
在这种情况下,我实际上不想使用 argparser
解决方案是将整个参数解析块移动到if __name__ == "__main__":
块中,结果是:
def step_test_experiment(inputs_filename=None, outputs_filename=None):
print(inputs_filename, outputs_filename)
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-i", "--inputfile", type=str, default=None,
help="filename containing input data")
parser.add_argument("-o", "--outputfile", type=str, default=None,
help="filename to save output data to")
args = parser.parse_args()
if args.outputfile is None:
outputs_filename = "tclab_dyn_data.csv"
else:
outputs_filename = args.outputfile
step_test_experiment(args.inputfile, outputs_filename)
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.