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# python argparse6.py 4

# python argparse6.py 4 -v

import argparse

parser = argparse.ArgumentParser()

parser.add_argument("square", type=int, help="display a square of a given number")

parser.add_argument("-v","--verbose", help="increase output verbose", action="store_true")

args = parser.parse_args()

answer = args.square ** 2

if args.verbose:

print("the square of {} equals {}".format(args.square, answer))

else:

print(answer)