In article <[EMAIL PROTECTED]>, billiejoex <[EMAIL PROTECTED]> wrote:
> Hi there. > I'm trying to generate a brand new file with a unique name by using > tempfile.mkstemp(). > In conjunction I used os.fdopen() to get a wrapper around file > properties (write & read methods, and so on...) but 'name' attribute > does not contain the correct file name. Why? > > >>> import os > >>> import tempfile > >>> fileno, name = tempfile.mkstemp(prefix='ftpd.', dir=os.getcwd()) > >>> fd = os.fdopen(fileno, 'wb') > >>> fd.name > <fdopen> > > Moreover, I'd like to know if I'm doing fine. Does this approach avoid > race conditions or other types of security problems? > > Thanks in advance In brief, since os.fdopen() only has access to the file descriptor, it does not have a convenient way to obtain the file's name. However, you might also want to look at the TemporaryFile and NamedTemporaryFile classes in the tempfile module -- these expose a file-like API, including a .name attribute. Assuming tempfile.mkstemp() is implemented properly, I think what you are doing should be sufficient to avoid the obvious file-creation race condition. Cheers, -M -- Michael J. Fromberger | Lecturer, Dept. of Computer Science http://www.dartmouth.edu/~sting/ | Dartmouth College, Hanover, NH, USA -- http://mail.python.org/mailman/listinfo/python-list
