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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2018-07-10 07:48:57 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-07-10 07:48:57 (GMT) |
| commit | df9f633f94e97fc43e0235cb2be076491ea7f67f (patch) | |
| tree | 7f9eb16b48e04c3cf717003bdfc4a95b7c17d70b /Lib/functools.py | |
| parent | c3bdea4c6ca8861e144802b8e319fe266941790f (diff) | |
| download | cpython-df9f633f94e97fc43e0235cb2be076491ea7f67f.zip cpython-df9f633f94e97fc43e0235cb2be076491ea7f67f.tar.gz cpython-df9f633f94e97fc43e0235cb2be076491ea7f67f.tar.bz2 | |
bpo-33967: Fix singledispatch raised IndexError when no args (GH-8184)
(cherry picked from commit 445f1b35ce8461268438c8a6b327ddc764287e05)
Co-authored-by: Dong-hee Na <donghee.na92@gmail.com>
Diffstat (limited to 'Lib/functools.py')
| -rw-r--r-- | Lib/functools.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Lib/functools.py b/Lib/functools.py index c8b79c2..24b011d 100644 --- a/Lib/functools.py +++ b/Lib/functools.py @@ -817,8 +817,13 @@ def singledispatch(func): return func def wrapper(*args, **kw): + if not args: + raise TypeError(f'{funcname} requires at least ' + '1 positional argument') + return dispatch(args[0].__class__)(*args, **kw) + funcname = getattr(func, '__name__', 'singledispatch function') registry[object] = func wrapper.register = register wrapper.dispatch = dispatch |