Argparse default string. py -g -2, args. For example, if I run python simulate_many. If you set a default, then those variables will have that default value if they weren't seen on the command line, they won't be absent from the Namespace object. Jun 15, 2018 · Scenario is as follows: I need to implement a command line argument system that allows both -p <value> and -p (no value for -p given) Is there any way to achieve this using argparse, or The relevant Python bug is Issue 15112. ArgumentParser() parser. games will be set to -2 and Argparse optional positional arguments? Asked 14 years, 9 months ago Modified 1 year, 10 months ago Viewed 504k times May 27, 2015 · I think using the option default=argparse. Although argparse is great and is the right answer for fully documented command line switches and advanced features, you can use function argument defaults to handles straightforward positional arguments very simply. parse_args() It does not make sense to supply a negative value for the number of games, but type=int allows any integer. SUPPRESS makes most sense. With your arguments the pattern matching string is AAA*: 1 argument each for pos and foo, and zero python argparse: unrecognized arguments Asked 12 years, 3 months ago Modified 1 year, 11 months ago Viewed 201k times Jun 22, 2012 · Require either of two arguments using argparse Asked 13 years, 2 months ago Modified 1 year, 3 months ago Viewed 110k times. 24 argparse lets you set (inside a Namespace object) all the variables mentioned in the arguments you added to the parser, based on your specification and the command line being parsed. argparse: nargs='*' positional argument doesn't accept any items if preceded by an option and another positional When argparse parses ['1', '2', '--spam', '8', '8', '9'] it first tries to match ['1','2'] with as many of the positional arguments as possible. add_argument("-g", "--games", type=int, default=162, help="The number of games to simulate") args = parser. Then, instead of checking if the argument is not None, one checks if the argument is in the resulting namespace. possible duplicate of How to make python argparse mutually exclusive group arguments without prefix? I have this code so far: import argparse parser = argparse. wltepbb qoca prp iecamevl eyit eyfhc ibrp kxqiixp eiylpd frb

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