parser= argparse.ArgumentParser(description='Test command line arguments') parser.add_argument('-w','--width', type=int, default=30, metavar='', required=True, help='Width of a rectangle') parser.add_argument('-H','--height', type=int, metavar='', required=True, help='Height of a ...
parser.add_argument('-s','--save-file', help='Description', required=False) args = parser.parse_args() print(args.open_file) print(args.save_file) Docopt Docopt can be used to create command line interfaces. fromdocoptimportdocopt if__name__ =='__main__': arguments = docopt(__doc...
A parser is created withArgumentParserand a new parameter is added withadd_argument. Arguments can be optional, required, or positional. Optional argument The following example creates a simple argument parser. optional_arg.py #!/usr/bin/python import argparse # help flag provides flag help # st...
Video introduction to docopt: PyCon UK 2012: Create *beautiful* command-line interfaces with PythonNew in version 0.6.1: Fix issue #85 which caused improper handling of [options] shortcut if it was present several times. New in version 0.6.0: New argument options_first, disallows intersper...
Optional command-line arguments without a valueWe can also make optional command-line arguments that don't accept a value.In this version of add.py we're accepting an optional --verbose argument:import argparse parser = argparse.ArgumentParser() parser.add_argument('x', type=float) parser.add...
python main.py which will print out: The name of this script is main.py The command line arguments to this script are stored as a list of strings. We can access the first argument with an index of 0, which is the file name of the script itself. ...
Argparse in Python is a built-in module used to parse command-line arguments. Here’s a simple example of how to use it: importargparse parser=argparse.ArgumentParser()parser.add_argument('--name')args=parser.parse_args()print(args.name)# Output:# Whatever value you passed in with --name...
Getting Started With CLIs in Python: sys.argv vs argparse Creating Command-Line Interfaces With Python’s argparse Customizing Your Command-Line Argument Parser Fine-Tuning Your Command-Line Arguments and Options Defining Mutually Exclusive Argument and Option Groups Adding Subcommands to Your CLIs...
parser.add_argument("reportname", help="set the reportname by this argument") args=parser.parse_args()printargs.report 执行脚本: C:\PycharmProjects\p3\src\pyproject1>python argTest.py arg test usage: argTest.py [-h] reportname
if option's argument has a default value. The rules are as follows: Every line in the options section body that starts with one or more horizontal whitespace characters, followed by - or -- is treated as an option description, e.g.: Options: --verbose # GOOD -o FILE # GOOD Other: ...