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在python中将unicode utf-8数据写入文件时出现问题
原标题:Problem writing unicode utf-8 data to file in python

在Python程序中,我在将unicode写入文件时遇到了一些问题。

以下是保存文件的代码:

def file_save(self):
    # save changes to existing file
    if self.filename and isfile(self.filename):

        self.watcher.removePath(self.filename)
        s = codecs.open(self.filename, w , utf-8 )
        s.write(unicode(self.ui.editor_window.toPlainText()))
        s.close()
        self.ui.button_save.setEnabled(False)
        self.watcher.addPath(self.filename)
    # save a new file
    else:
        fd = QtGui.QFileDialog(self)
        newfile = fd.getSaveFileName()
        if newfile:
            s = codecs.open(newfile, w , utf-8 )
            s.write(unicode(self.ui.editor_window.toPlainText()))
            s.close()
            self.ui.button_save.setEnabled(False)

一旦调用该方法,我就会收到以下错误消息:

line 113, in file_save
s.write(unicode(self.ui.editor_window.toPlainText()))
NameError: global name  unicode  is not defined

我正在运行Python 3.2,似乎在任何地方都找不到问题。

问题回答

Unicode支持在3.x中得到了“修复”。正常的字符串文字存储为Unicode,而正常的open()函数获得了encoding参数,从而使codecs.open()过时。

    s = open(self.filename,  w , encoding= utf-8 )
    s.write(self.ui.editor_window.toPlainText())




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