[issue20082] Misbehavior of BufferedRandom.write with raw file in append mode

Change by Erik Bray : -- pull_requests: +20873 pull_request: https://github.com/python/cpython/pull/21729 ___ Python tracker ___

[issue20082] Misbehavior of BufferedRandom.write with raw file in append mode

Erik Bray added the comment: I keep forgetting about this (given that it's like 5 years old now). Let me see if I can make a new PR for it... -- ___ Python tracker

[issue20082] Misbehavior of BufferedRandom.write with raw file in append mode

Change by Nitish : -- nosy: +nitishch ___ Python tracker ___ ___ Python-bugs-list

[issue20082] Misbehavior of BufferedRandom.write with raw file in append mode

Changes by Serhiy Storchaka storch...@gmail.com: -- nosy: +benjamin.peterson, hynek, pitrou, serhiy.storchaka, stutzbach stage: - patch review versions: +Python 2.7, Python 3.4, Python 3.5 ___ Python tracker rep...@bugs.python.org

[issue20082] Misbehavior of BufferedRandom.write with raw file in append mode

New submission from Erik Bray: In #18876 I pointed out the following issue: BufferedWriter/Random doesn't know the raw file was opened with O_APPEND so the writes it shows in the buffer differ from what will actually end up in the file. For example: f = open('test', 'wb')