I want to make sure some necessary arguments is provided by user when they run the python script. And I want to break the program and print the help information if the required argument is missing.
Right now, I write some program like below to achieve this goal, If there are some convenient way to do this ?
import argparse
parser = argparse.ArgumentParser(description='Description of your program')
parser.add_argument('-a', '--arg1', type=str, help='Description of arg1')
parser.add_argument('-b', '--arg2', type=str, help='Description of arg2')
parser.add_argument('-c', '--arg3', type=str, help='Description of arg3')
args = parser.parse_args()
# Check if the required arguments have been provided
if not args.arg3:
parser.print_help()
exit()
if I setrequired == True in add_argument() function, I can't use the parser.print_help() function, so how do this in a fancy way.
