Let's suppose somebody passes me a file descriptor to work with. It could come from somewhere else, but for the sake of discussion let's pretend I create it myself this way:
import os fd = os.open("some path", "w") I then turn it into a file object: file_obj = os.fdopen(fd, mode) Q1: In this example, I know that I opened the fd in write mode, because I did it myself. But since I'm not actually opening it, how do I know what mode to use in the call to fdopen? Is there something I can call to find out what mode a file descriptor has been opened with? Now let's suppose I solve that problem, process the file_obj, and close it: file_obj.close() Q2: Do I still have to close the file descriptor with os.close(fd)? (I think not.) Q3: I could probably answer Q2 myself if I knew how to check whether a fd was open or not. With a file object, I can inspect file_obj.closed and it will tell me whether the file is open or not. Is there an equivalent for file descriptors? -- Steven -- https://mail.python.org/mailman/listinfo/python-list