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| author | Naris R <nariscatboy@gmail.com> | 2018-08-30 16:56:14 (GMT) |
|---|---|---|
| committer | Raymond Hettinger <rhettinger@users.noreply.github.com> | 2018-08-30 16:56:14 (GMT) |
| commit | 1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc (patch) | |
| tree | dca9f2435a0fdd8a30e1d3ecc1a3d2e3499379da /Lib/_collections_abc.py | |
| parent | e6dac0077996b1e1f886f036d6f2606237fa4c85 (diff) | |
| download | cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.zip cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.tar.gz cpython-1b5f9c9653f348b0aa8b7ca39f8a9361150f7dfc.tar.bz2 | |
bpo-34427: Fix infinite loop when calling MutableSequence.extend() on self (GH-8813)
Diffstat (limited to 'Lib/_collections_abc.py')
| -rw-r--r-- | Lib/_collections_abc.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py index dbe30df..c363987 100644 --- a/Lib/_collections_abc.py +++ b/Lib/_collections_abc.py @@ -986,6 +986,8 @@ class MutableSequence(Sequence): def extend(self, values): 'S.extend(iterable) -- extend sequence by appending elements from the iterable' + if values is self: + values = list(values) for v in values: self.append(v) |