argparse multiple arguments as list
import argparse
parser = argparse.ArgumentParser()
# By default it will fail with multiple arguments.
parser.add_argument('--default')
# Telling the type to be a list will also fail for multiple arguments,
# but give incorrect results for a single argument.
parser.add_argument('--list-type', type=list)
# This will allow you to provide multiple arguments, but you will get
# a list of lists which is not desired.
parser.add_argument('--list-type-nargs', type=list, nargs='+')
# This is the correct way to handle accepting multiple arguments.
# '+' == 1 or more.
# '*' == 0 or more.
# '?' == 0 or 1.
# An int is an explicit number of arguments to accept.
parser.add_argument('--nargs', nargs='+')
# To make the input integers
parser.add_argument('--nargs-int-type', nargs='+', type=int)
# An alternate way to accept multiple inputs, but you must
# provide the flag once per input. Of course, you can use
# type=int here if you want.
parser.add_argument('--append-action', action='append')
# To show the results of the given option to screen.
for _, value in parser.parse_args()._get_kwargs():
if value is not None:
print(value)
4.5
6
parser.add_argument('-l','--list', nargs='+', help='<Required> Set flag', required=True)
# Use like:
# python arg.py -l 1234 2345 3456 4567
Thank you!
6
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