fileinput.py 文件源码

def nextfile(self):
        savestdout = self._savestdout
        self._savestdout = 0
        if savestdout:
            sys.stdout = savestdout

        output = self._output
        self._output = 0
        if output:
            output.close()

        file = self._file
        self._file = 0
        if file and not self._isstdin:
            file.close()

        backupfilename = self._backupfilename
        self._backupfilename = 0
        if backupfilename and not self._backup:
            try: os.unlink(backupfilename)
            except OSError: pass

        self._isstdin = False
        self._buffer = []
        self._bufindex = 0