On Tue, Oct 29, 2013 at 6:33 AM, Albert-Jan Roskam <fo...@yahoo.com> wrote: > Why is do_setlocale=False here? Actually, what does this parameter do? > It seems strange that a getter function has a 'set' argument.
On Windows, getpreferredencoding doesn't use setlocale. It calls WinAPI GetACP to fetch the ANSI codepage. On POSIX, calling setlocale(LC_CTYPE, "") ensures the locale is initialized from the LC_* and LANG environment variables. getpreferredencoding saves and restores the previous locale (e.g. "C"); it isn't set permanently. For example, in 2.x on my Debian system, calling locale.getpreferredencoding(False) returns "ANSI_X3.4-1968" (i.e. the "C" locale uses ASCII), while locale.getpreferredencoding(True) returns "UTF-8". setlocale isn't guaranteed to be thread safe, so 3.x io.TextIOWrapper uses do_setlocale=False. That's OK; Py_Initialize in CPython 3.x has already called setlocale(LC_CTYPE, ""). On the other hand, 2.x io.TextIOWrapper has to use do_setlocale=True, as demonstrated by the previous example. > Other remark: I have not read this entire thread, but I was thinking the > OP might use codecs.open to open the file in the correct encoding. The OP is using 3.2. For some time there's been talk of deprecating codecs.open in 3.x (even the Stream* classes); see issue 8796 or PEP 400. It's still in 3.4, however. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
