https://github.com/python/cpython/commit/052ca8ffe8c57afb9c270fcc4eb5f390cbcfb8ce commit: 052ca8ffe8c57afb9c270fcc4eb5f390cbcfb8ce branch: main author: Cody Maloney <[email protected]> committer: vstinner <[email protected]> date: 2025-02-06T10:18:08Z summary:
gh-129005: Update _pyio.BytesIO to use bytearray.resize on write (#129702) Co-authored-by: Victor Stinner <[email protected]> files: M Lib/_pyio.py diff --git a/Lib/_pyio.py b/Lib/_pyio.py index 023478aa78c6a0..b3a8f37d68acdb 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -937,10 +937,8 @@ def write(self, b): return 0 pos = self._pos if pos > len(self._buffer): - # Inserts null bytes between the current end of the file - # and the new write position. - padding = b'\x00' * (pos - len(self._buffer)) - self._buffer += padding + # Pad buffer to pos with null bytes. + self._buffer.resize(pos) self._buffer[pos:pos + n] = b self._pos += n return n _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
