Made FileSystemStorage accept both text and byte streams

                    fd = os.open(full_path, os.O_WRONLY | os.O_CREAT | os.O_EXCL | getattr(os, 'O_BINARY', 0))

                    try:

                        locks.lock(fd, locks.LOCK_EX)

                        _file = None

                        for chunk in content.chunks():

                            os.write(fd, chunk)

                            if _file is None:

                                mode = 'wb' if isinstance(chunk, bytes) else 'wt'

                                _file = os.fdopen(fd, mode)

                            _file.write(chunk)

                    finally:

                        locks.unlock(fd)

                        if _file is not None:

                            _file.close()

                        else:

                            os.close(fd)

            except OSError as e:

                if e.errno == errno.EEXIST:

        finally:

            os.remove = real_remove

    def test_file_chunks_error(self):

        """

        Test behaviour when file.chunks() is raising an error

        """

        f1 = ContentFile('chunks fails')

        def failing_chunks():

            raise IOError

        f1.chunks = failing_chunks

        with self.assertRaises(IOError):

            self.storage.save('error.file', f1)

class CustomStorage(FileSystemStorage):

    def get_available_name(self, name):