SystemExit: 2 , args = parser.parse_args() error

Question

How can I fix this ?

parser = argparse.ArgumentParser()
parser.add_argument("mode", help="Trains or tests the CNN", nargs="*", choices=["train", "continue", "test", "confusionmatrix", "vote", "slice"])
parser.add_argument("--resume", help="The version to continue training from", required=False, default=False)
parser.add_argument("--epochs", help="The number of epochs to finish training from", type=int, required=False, default=False)

args = parser.parse_args()

print("args", args)

I tried

*args, unknown = parser.parse_known_args()

and it doesnt work

Asked By: Yovel

||

Source

Answer 1

You can’t leave argument value blank. If your right value is one of them ["train", "continue", "test", "confusionmatrix", "vote", "slice"] then you have to put like this:

parser.add_argument("--mode", help="Trains or tests the CNN", nargs="*", required=False, default='confusionmatrix')

You can replace ‘confusionmatrix’ with any one of them ["train", "continue", "test", "confusionmatrix", "vote", "slice"]

If you get SystemExit: 2 you can try like this:

parser = argparse.ArgumentParser()
parser.add_argument("--mode", help="Trains or tests the CNN", nargs="*", required=False, default='confusionmatrix')
parser.add_argument("--resume", help="The version to continue training from", required=False, default=False)
parser.add_argument("--epochs", help="The number of epochs to finish training from", type=int, required=False, default=100)
parser.add_argument("-f", required=False)

args = parser.parse_args()

print("args", args)

You need to add in the end of " arg_parse.add_argument " line [ parser.add_argument("-f", required=False) ]

Answered By: CB Acnt

SystemExit: 2 , args = parser.parse_args() error

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