Python argparse: Make at least one argument required

Question

I\'ve been using argparse for a Python program that can -process, -upload or both:

parser = argparse.ArgumentParser(de         


        

Answer 1

The best way to do this is by using python inbuilt module add_mutually_exclusive_group.

parser = argparse.ArgumentParser(description='Log archiver arguments.')
group = parser.add_mutually_exclusive_group()
group.add_argument('-process', action='store_true')
group.add_argument('-upload',  action='store_true')
args = parser.parse_args()

If you want only one argument to be selected by command line just use required=True as an argument for group

group = parser.add_mutually_exclusive_group(required=True)