argparse_tutorial

code from argparse tutorial and documentation

requirements

• macOS
• Python 3.6

make deps

tests

make test

table of content

• argparse tutorial

  • basics
  • positional arguments
  • document arguments and specify the type
  • optional arguments
  • boolean optional arguments
  • short options
  • positional and optional arguments
  • processing multiple argument values
  • limit number of allowed values for argument
  • countable arguments, e.g. -vvv and default value
  • add more arguments
  • add more text to verbose
  • conflicting options
  • description

• examples from documentation

  • simple example
  • parent parser, parsers share multiple arguments
  • epilog message in help
  • overwrite usage message
  • provide a description for parser
  • class mixin for help formatting
  • change flags prefix character
  • load arguments from file
  • default value for all parser arguments, suppressing default None
  • disallow abbreviation in arguments
  • allow conflict flags
  • disable help flag or change it's prefix
  • optional and positional arguments
  • different add_argument actions
  • number of arguments
  • default value for argument
  • argument type conversion
  • arguments with choices
  • required arguments
  • providing a help
  • display example value in help
  • changing inner option reference name
  • optional value syntax
  • invalid arguments messages
  • dash in argument name
  • argument abbreviations
  • interactive parse_args
  • Namespace object
  • subparsers
  • files as arguments
  • argument groups for help
  • mutual exclusion of arguments
  • predefined arguments
  • parse only known arguments
  • custom file parsing
  • exiting methods

the end