Massimiliano Culpo 09378f56c0 Use a patched argparse only in Python 2.X (#25376) ... Spack is internally using a patched version of `argparse` mainly to backport Python 3 functionality into Python 2. This PR makes it such that for the supported Python 3 versions we use `argparse` from the standard Python library. This PR has been extracted from #25371 where it was needed to be able to use recent versions of `pytest`. * Fixed formatting issues when using a pristine argparse.py * Fix error message for Python 3.X when missing positional arguments * Account for the change of API in Python 3.7 * Layout multi-valued args into columns in error messages * Seamless transition in develop if argparse.pyc is in external * Be more defensive in case we can't remove the file.		2021-08-17 08:52:51 -07:00
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sbang	Docs: Updated copyrights in files still using 2020 as ending year (#23215)	2021-04-22 22:23:09 -07:00
spack	Use a patched argparse only in Python 2.X (#25376)	2021-08-17 08:52:51 -07:00
spack-python	copyrights: update all files with license headers for 2021	2021-01-02 12:12:00 -08:00