type=dict in argparse.add_argument()

Question

I\'m trying to set up a dictionary as optional argument (using argparse); the following line is what I have so far:

parser.add_argument(\'-i\',\'--image\', t         


        

Answer 1

A minimal example to pass arguments as a dictionary from the command line:

# file.py
import argparse
import json
parser = argparse.ArgumentParser()
parser.add_argument("-par", "--parameters",
                    required=False,
                    default=None,
                    type=json.loads
                )
args = parser.parse_args()
print(args.parameters)

and in the terminal you can pass your arguments as a dictionary using a string format:

python file.py --parameters '{"a":1}'