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

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.

CodePudding user response：

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.