the output parameter‘s format is what?

[1999wen]

i want to know "parser.add_argument("output", help="path to the output image")", the output parameter‘s format is what? i set : input ./原始图像.bmp output ./yasuo.jpg" it sent: usage: encoder.py [-h] input output encoder.py: error: unrecognized arguments: output ./yasuo.jpg

[elenacliu]

just remove the word input and directly follow your path