Python 错误类型错误:必须是字符串或缓冲区，而不是实例 [英] Python error TypeError: must be string or buffer, not instance

问题描述

我正在尝试下载 QListWidget 中列出的一些图像我正在将链接传递给 urllib 但它给了我 TypeError: must be string or buffer, not instance 这个错误.我尝试在这里查找，但找不到任何解决方案，这是我的代码.谢谢

i am trying to download some images which are listed in QListWidget i am passing the links to the urllib but its giving me TypeError: must be string or buffer, not instance this error. I tried looking up here but couldn't find any solution here is my code. Thanks

    def downloadStuff(self):
    files = self.listWidget.selectedItems()
    for filename in files:
        filename = filename.text()
        filename = str(filename)
        print filename
        xfilename = filename.split('/')[-1]
        with open('D:/'+xfilename,'wb') as imageFile:
            print filename
            imageFile.write(urllib.urlopen(filename)).read()
        imageFile.close()

推荐答案

如果没有看到堆栈跟踪很难确定，但我怀疑这一行:

It's hard to say for sure without seeing the stack trace, but I suspect this line:

imageFile.write(urllib.urlopen(filename)).read()

应该是:

imageFile.write(urllib.urlopen(filename).read())

顺便说一句，您不需要 imageFile.close() 行，因为 with 语句会自动为您关闭文件.

Incidentally, you don't need the imageFile.close() line, because the with statement closes the file for you automatically.

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