python argparse
import argparse
# construct the argument parse and parse the arguments
ap = argparse.ArgumentParser()
ap.add_argument("-n", "--name", required=True, help="name of the user")
args = vars(ap.parse_args())
# display a friendly message to the user
print("Hi there {}, it's nice to meet you!".format(args["name"]))how to use argparse
import argparse
if __name__ == "__main__":
#add a description
parser = argparse.ArgumentParser(description="what the program does")
#add the arguments
parser.add_argument("arg1", help="advice on arg")
parser.add_argument("arg2", help="advice on arg")
# .
# .
# .
parser.add_argument("argn", help="advice on arg")
#this allows you to access the arguments via the object args
args = parser.parse_args()
#how to use the arguments
args.arg1, args.arg2 ... args.argnpython argparse file argument
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('file', type=argparse.FileType('r'))
args = parser.parse_args()
print(args.file.readlines())argparse python
# Generic parser function intialization in PYTHON
def create_parser(arguments):
"""Returns an instance of argparse.ArgumentParser"""
# your code here
parser = argparse.ArgumentParser(
description="Description of your code")
parser.add_argument("argument", help="mandatory or positional argument")
parser.add_argument("-o", "--optional",
help="Will take an optional argument after the flag")
namespace = parser.parse_args(arguments)
# Returns a namespace object with your arguments
return namespaceargparse accept only few options
...
parser.add_argument('--val',
choices=['a', 'b', 'c'],
help='Special testing value')
args = parser.parse_args(sys.argv[1:])python argparser flags
parser.add_argument("-v", "--verbose", action="store_true",
help="verbose output")Copyright © 2021 Codeinu
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