is there a way to have parameters be executed in random order in python cli?

Question

i have a program that takes 3 parameters: volume, weight, and model_path. Currently, i have:

 volume = int(args[0])
 weight = int(args[1])
 model_path = args[2]

so i have to execute it like this: python3 example.py 713 382 model.pkl. I want to be able to do it like this: python3 example.py --weight=500 --volume=437 --model=model.pkl, but in any order (so python3 example.py --volume=3100 --model=model.pkl --weight=472).

I tried

volume = int(args["--volume"])
weight = int(args["--weight"])
model_path = args["--model"]

and it said args could only be type slice or int, not string.

Asked By: user20624405

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Source

Answer 1

Ignoring the idea of reimplementing the argparse module, just use that module. For example,

import argparse

p = argparse.ArgumentParser()
p.add_argument('--volume', type=int)
p.add_argument('--weight', type=int)
p.add_argument('--model')

args = p.parse_args()

The result will be an instance of argparse.Namespace, which is just a very simple object with attributes associated with each argument you defined. For example, if you specify --weight=500 or --weight 500, then args.weight == 500.

Answered By: chepner

is there a way to have parameters be executed in random order in python cli?

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