8000 gh-91146: More reduce allocation size of list from str.split/rsplit by corona10 · Pull Request #95493 · python/cpython · GitHub
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gh-91146: More reduce allocation size of list from str.split/rsplit #95493

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Merged
merged 6 commits into from
Aug 1, 2022
Merged

gh-91146: More reduce allocation size of list from str.split/rsplit #95493

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48ad552
gh-91146: More reduce allocation size of list from str.split/rsplit
corona10 Jul 31, 2022
605e0cf
Update NEWS.d
corona10 Jul 31, 2022
cab2a61
Handle devide by zero
corona10 Jul 31, 2022
2ebc918
Add comment for len2 == 0
corona10 Jul 31, 2022
b5edcd8
Avoid overflow error
corona10 Jul 31, 2022
7f248ef
Handle overflow case
corona10 Jul 31, 2022
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Add comment for len2 == 0
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@corona10
corona10 committed Jul 31, 2022
commit 2ebc918d03af0c60f95f4ca02a866ed13e895e33
6 changes: 4 additions & 2 deletions Objects/unicodeobject.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9733,7 +9733,8 @@ split(PyObject *self,
kind2 = PyUnicode_KIND(substring);
len2 = PyUnicode_GET_LENGTH(substring);
if (maxcount < 0) {
maxcount = len2 == 0 ? (len1 + 1) / 2 : (len1 / len2) + 1;
// if len2 == 0, it will raise TypeError.
maxcount = len2 == 0 ? 0 : (len1 / len2) + 1;
}
if (kind1 < kind2 || len1 < len2) {
out = PyList_New(1);
Expand Down Expand Up @@ -9823,7 +9824,8 @@ rsplit(PyObject *self,
kind2 = PyUnicode_KIND(substring);
len2 = PyUnicode_GET_LENGTH(substring);
if (maxcount < 0) {
maxcount = len2 == 0 ? (len1 + 1) / 2 : (len1 / len2) + 1;
// if len2 == 0, it will raise TypeError.
maxcount = len2 == 0 ? 0 : (len1 / len2) + 1;
}
if (kind1 < kind2 || len1 < len2) {
out = PyList_New(1);
Expand Down
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