Method fileno

Lib/_pyio.py:492–497

Returns underlying file descriptor (an int) if one exists. An OSError is raised if the IO object does not use a file descriptor.

(self)

    # XXX Should these be present even if unimplemented?

    def fileno(self):
        """Returns underlying file descriptor (an int) if one exists.

        An OSError is raised if the IO object does not use a file descriptor.
        """
        self._unsupported("fileno")

    def isatty(self):
        """Return a bool indicating whether this is an 'interactive' stream.