How to fix “error: the following arguments are required: -i/--image”

问题

I was looking at someone else's code and following python code;

import argparse

ap = argparse.ArgumentParser()
ap.add_argument("-i", "--image", required=True, help="path to the input image")
args = vars(ap.parse_args())

gives the following error on the last line;

usage: sample.py [-h] -i IMAGE
sample.py: error: the following arguments are required: -i/--image

How can I fix this problem? Nothing I have tried so far seems to help.

回答1:

When running sample.py, you need to specify the -i/--image argument:

python sample.py --image image/cat.png

If you want the image argument to be optional, remove required=True:

ap.add_argument("-i", "--image", help="path to the input image")

来源：https://stackoverflow.com/questions/55531306/how-to-fix-error-the-following-arguments-are-required-i-image