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Some helpers for python's argparse

Project description

python-argparse-extras

Some helpers for python's argparse.

Currently, this package provides 3 HelpFormatter classes that you can extend and / or use with python's argparse module:

Contents

WideHelpFormatter

HelpFormatter which tries to use a given amount of the terminal width.

The maximum line length is determines by the class attribute percentage_of_line_length. This defaults to the full width (1.0). Override this class and set your own percentage.

This uses shutil.get_terminal_size() to determine the line length.

ThreeQuarterWidthHelpFormatter

A WideHelpFormatter subclass with its percentage_of_line_length set to three quarters of the terminal line length.

ThreeQuarterWidthDefaultsHelpFormatter

A ThreeQuarterWidthHelpFormatter subclass which also derives from argparse.ArgumentDefaultsHelpFormatter. This means that in addition to using 3/4 of the terminal line length, it also prints the argument defaults in the help text.

Usage

Use these classes in the same way as any other argparse.HelpFormatter subclass while creating your argument parser:

parser = argparse.ArgumentParser(formatter_class=<HelpFormatter>)
parser.add_argument(...)
...

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