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| author | Nitish Chandra <nitishchandrachinta@gmail.com> | 2017-12-12 10:22:30 (GMT) |
|---|---|---|
| committer | Victor Stinner <victor.stinner@gmail.com> | 2017-12-12 10:22:30 (GMT) |
| commit | 5ce0a2a100909104836f53a2c8823006ec46f8ad (patch) | |
| tree | 5031cf4b1b64f547bc1b639b34891065180d180e /Lib/_collections_abc.py | |
| parent | 2001900b0c02a397d8cf1d776a7cc7fcb2a463e3 (diff) | |
| download | cpython-5ce0a2a100909104836f53a2c8823006ec46f8ad.zip cpython-5ce0a2a100909104836f53a2c8823006ec46f8ad.tar.gz cpython-5ce0a2a100909104836f53a2c8823006ec46f8ad.tar.bz2 | |
bpo-31942: Document optional support of start and stop attributes in Sequence.index method (#4277)
Diffstat (limited to 'Lib/_collections_abc.py')
| -rw-r--r-- | Lib/_collections_abc.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py index e89e84b..a5c7bfc 100644 --- a/Lib/_collections_abc.py +++ b/Lib/_collections_abc.py @@ -899,6 +899,9 @@ class Sequence(Reversible, Collection): def index(self, value, start=0, stop=None): '''S.index(value, [start, [stop]]) -> integer -- return first index of value. Raises ValueError if the value is not present. + + Supporting start and stop arguments is optional, but + recommended. ''' if start is not None and start < 0: start = max(len(self) + start, 0) |