tiny_python_projects/appendix_argparse/manual.py at master · devicentef/tiny_python_projects

executable file

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#!/usr/bin/env python3

"""Manually check an argument"""

import argparse

# --------------------------------------------------

def get_args():

"""Get command-line arguments"""

parser = argparse.ArgumentParser(

description='Manually check an argument',

formatter_class=argparse.ArgumentDefaultsHelpFormatter)

parser.add_argument('-v',

'--val',

help='Integer value between 1 and 10',

metavar='int',

type=int,

default=5)

args = parser.parse_args() # <1>

if not 1 <= args.val <= 10: # <2>

parser.error(f'--val "{args.val}" must be between 1 and 10') # <3>

return args # <4>

# --------------------------------------------------

def main():

"""Make a jazz noise here"""

args = get_args()

print(f'val = "{args.val}"')

# --------------------------------------------------

if __name__ == '__main__':

main()

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