Method truncate

Lib/_pyio.py:1430–1434

(self, pos=None)

            return BufferedReader.tell(self)

    def truncate(self, pos=None):
        if pos is None:
            pos = self.tell()
        # Use seek to flush the read buffer.
        return BufferedWriter.truncate(self, pos)

    def read(self, size=None):
        if size is None: