argparse fails in interactive window

[memoakten]

This bug from over a year ago is still present. https://github.com/microsoft/vscode-jupyter/issues/1837

This issue has been closed and locked because a work around was suggested. However the work around only prevents the file from crashing, and doesn't actually solve the issue (i.e. if you deploy the file with the work around, it will ignore command line arguments! So this will not work. The bug is still present)

import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--test', default='Hello')
args = parser.parse_args()
print(vars(args))

usage: ipykernel_launcher [-h] [--test TEST]
ipykernel_launcher: error: unrecognized arguments: --ip=127.0.0.1 --stdin=9013 --control=9011 --hb=9010 --Session.signature_scheme="hmac-sha256" --Session.key=b"3b5fb288-5b42-46ea-8b68-8dc34e8fb27a" --shell=9012 --transport="tcp" --iopub=9014 --f=C:\Users\memoa\AppData\Local\Temp\tmp-30472W3VxMHiZejQB.json
An exception has occurred, use %tb to see the full traceback.

SystemExit: 2



%tb
---------------------------------------------------------------------------
SystemExit                                Traceback (most recent call last)
c:\Users\memoa\Dropbox\research\py\__tests\vscode\testargs.py in 
      6 parser = argparse.ArgumentParser()
      7 parser.add_argument('--test', default='Hello')
----> 8 args = parser.parse_args()
      9 print(vars(args))

C:\tools\Anaconda3\lib\argparse.py in parse_args(self, args, namespace)
   1769         if argv:
   1770             msg = _('unrecognized arguments: %s')
-> 1771             self.error(msg % ' '.join(argv))
   1772         return args
   1773 

C:\tools\Anaconda3\lib\argparse.py in error(self, message)
   2519         self.print_usage(_sys.stderr)
   2520         args = {'prog': self.prog, 'message': message}
-> 2521         self.exit(2, _('%(prog)s: error: %(message)s\n') % args)

C:\tools\Anaconda3\lib\argparse.py in exit(self, status, message)
   2506         if message:
   2507             self._print_message(message, _sys.stderr)
-> 2508         _sys.exit(status)
   2509 
   2510     def error(self, message):

SystemExit: 2