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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2021-12-15 12:20:04 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-12-15 12:20:04 (GMT) |
| commit | 8e4c96295bd78ae5f70b908e5dbac0da7c4c21bd (patch) | |
| tree | ebbc320a1cfd9fad4c2c2a7fbdb3241d816216e0 /Lib/argparse.py | |
| parent | 908fd691f96403a3c30d85c17dd74ed1f26a60fd (diff) | |
| download | cpython-8e4c96295bd78ae5f70b908e5dbac0da7c4c21bd.zip cpython-8e4c96295bd78ae5f70b908e5dbac0da7c4c21bd.tar.gz cpython-8e4c96295bd78ae5f70b908e5dbac0da7c4c21bd.tar.bz2 | |
bpo-26952: [argparse] clearer error when formatting an empty mutually… (GH-30099) (GH-30114)
(cherry picked from commit 86de99588db3beff964137f4fe27dd1077a09b35)
Co-authored-by: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Diffstat (limited to 'Lib/argparse.py')
| -rw-r--r-- | Lib/argparse.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/argparse.py b/Lib/argparse.py index 9eed24c..b2db312 100644 --- a/Lib/argparse.py +++ b/Lib/argparse.py @@ -392,6 +392,9 @@ class HelpFormatter(object): group_actions = set() inserts = {} for group in groups: + if not group._group_actions: + raise ValueError(f'empty group {group}') + try: start = actions.index(group._group_actions[0]) except ValueError: |