diff options
| author | Batuhan Taşkaya <47358913+isidentical@users.noreply.github.com> | 2019-05-21 17:47:42 (GMT) |
|---|---|---|
| committer | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2019-05-21 17:47:42 (GMT) |
| commit | aa32a7e1116f7aaaef9fec453db910e90ab7b101 (patch) | |
| tree | 2e361b8ada3bdcaac42a8aa0e237baaf814d66c9 /Doc | |
| parent | d5c120f7eb6f2a9cdab282a5d588afed307a23df (diff) | |
| download | cpython-aa32a7e1116f7aaaef9fec453db910e90ab7b101.zip cpython-aa32a7e1116f7aaaef9fec453db910e90ab7b101.tar.gz cpython-aa32a7e1116f7aaaef9fec453db910e90ab7b101.tar.bz2 | |
bpo-23378: Add an extend action to argparse (GH-13305)
Add an extend action to argparse
https://bugs.python.org/issue23378
Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/argparse.rst | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst index cef197f..b77a38c 100644 --- a/Doc/library/argparse.rst +++ b/Doc/library/argparse.rst @@ -797,6 +797,15 @@ how the command-line arguments should be handled. The supplied actions are: >>> parser.parse_args(['--version']) PROG 2.0 +* ``'extend'`` - This stores a list, and extends each argument value to the + list. + Example usage:: + + >>> parser = argparse.ArgumentParser() + >>> parser.add_argument("--foo", action="extend", nargs="+", type=str) + >>> parser.parse_args(["--foo", "f1", "--foo", "f2", "f3", "f4"]) + Namespace(foo=['f1', 'f2', 'f3', 'f4']) + You may also specify an arbitrary action by passing an Action subclass or other object that implements the same interface. The recommended way to do this is to extend :class:`Action`, overriding the ``__call__`` method |