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| -rw-r--r-- | Misc/NEWS | 25 |
1 files changed, 24 insertions, 1 deletions
@@ -26,7 +26,7 @@ Library arbitrary shell code can't be executed because a bogus URL was passed in. -- gettext.translation has an optional fallback argument, and +- gettext.translation has an optional fallback argument, and gettext.find an optional all argument. Translations will now fallback on a per-message basis. @@ -59,6 +59,29 @@ Tests Windows +- New tempfile.TemporaryFile implementation for Windows: this doesn't + need a TemproraryFileWrapper wrapper anymore, and should be immune + to a nasty problem: before 2.3, if you got a temp file on Windows, it + got wrapped in an object whose close() method first closed the + underlying file, then deleted the file. This usually worked fine. + However, the spawn family of functions on Windows create (at a low C + level) the same set of open files in the spawned process Q as were + open in the spawning process P. If a temp file f was among them, then + doing f.close() in P first closed P's C-level file handle on f, but Q's + C-level file handle on f remained open, so the attempt in P to delete f + blew up with a "Permission denied" error (Windows doesn't allow + deleting open files). This was surprising, subtle, and difficult to + work around. + +- The os module now exports all the symbolic constants usable with the + low-level os.open() on Windows: the new constants in 2.3 are + O_NOINHERIT, O_SHORT_LIVED, O_TEMPORARY, O_RANDOM and O_SEQUENTIAL. + The others were also available in 2.2: O_APPEND, O_BINARY, O_CREAT, + O_EXCL, O_RDONLY, O_RDWR, O_TEXT, O_TRUNC and O_WRONLY. Contrary + to Microsoft docs, O_SHORT_LIVED does not seem to imply O_TEMPORARY + (so specify both if you want both; note that neither is useful unless + specified with O_CREAT too). + Mac |