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authorSteven Bethard <steven.bethard@gmail.com>2011-03-26 20:49:00 (GMT)
committerSteven Bethard <steven.bethard@gmail.com>2011-03-26 20:49:00 (GMT)
commitd186f99d00a8f2443774c9d277c9b615aa8b6d6d (patch)
tree98ff045a259f61893aaf71b3fe5fec4e0465e1c5
parentd8ad68f34c23645c1a1dfadd63470b3851ba5bea (diff)
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Issue #9343: Document that argparse parent parsers must be configured before their children.
-rw-r--r--Doc/library/argparse.rst5
-rw-r--r--Misc/NEWS3
2 files changed, 8 insertions, 0 deletions
diff --git a/Doc/library/argparse.rst b/Doc/library/argparse.rst
index 102b3e9..2164ec0 100644
--- a/Doc/library/argparse.rst
+++ b/Doc/library/argparse.rst
@@ -351,6 +351,11 @@ Note that most parent parsers will specify ``add_help=False``. Otherwise, the
:class:`ArgumentParser` will see two ``-h/--help`` options (one in the parent
and one in the child) and raise an error.
+.. note::
+ You must fully initialize the parsers before passing them via ``parents=``.
+ If you change the parent parsers after the child parser, those changes will
+ not be reflected in the child.
+
formatter_class
^^^^^^^^^^^^^^^
diff --git a/Misc/NEWS b/Misc/NEWS
index 4638fd7..babee78 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -162,6 +162,9 @@ Library
- Issue #8982: Improve the documentation for the argparse Namespace object.
+- Issue #9343: Document that argparse parent parsers must be configured before
+ their children.
+
Build
-----