Марк Коренберг added the comment: Such construction is not so easy. Especially for beginners. Not everyone even uses context managers to work with files. They will try to use os.chmod(). More clever will use os.fchmod(fileobj.fileno()). And in rare case someone asks about race condition between threads. So, not implementing that is error prone, and also forces users to make hidden bugs.
Why not to follow the principle of Least Surprise ? In you way, we did not have to implement a lot of things, that we have now. Like tempfile, shutil and so on. They may be implemented using complex combination of simplier items. Answer: these things make Python easy, secure and (insert good words here by yourself). Why are you afraid to add one very simple thing ? Next, what if I want to use, say, 'r+b', in that case I should remember combination of O_XXXXX constants like O_TRUNC|O_CREAT|O_APPEND and so on.. It's great that Python allows such things! really great! but how many people want to write that in their code? (Sorry for long text, but I really can not understand) ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29214> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
