argparse
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-n", "--name", help="Name of thing")
parser.add_argument("-s", "--size", help="Size of thing", type=int)
args = parser.parse_args()
print(args.name, args.size)argparse
import argparse
parser = argparse.ArgumentParser()
parser.add_argument("-n", "--name", help="Name of thing")
parser.add_argument("-s", "--size", help="Size of thing", type=int)
args = parser.parse_args()
print(args.name, args.size)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"]))argeparse can it take a type 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)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 namespaceCopyright © 2021 Codeinu
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