python - AttributeError：“str”对象没有属性“write”

Question

我正在使用 Python 并定义了一个名为“_headers”的变量，如下所示

_headers = ('id',
                'recipient_address_1',
                'recipient_address_2',
                'recipient_address_3',
                'recipient_address_4',
                'recipient_address_5',
                'recipient_address_6',
                'recipient_postcode',
                )

为了将其写入输出文件，我编写了以下语句，但它抛出错误“AttributeError：'str'对象没有属性'write'”

with open(outfile, 'w') as f:  
            outfile.write(self._headers)  
            print done

请帮忙

Answer 1

你想要f.write，而不是outfile.write...

outfile是字符串形式的文件名。 f是文件对象。

如评论中所述，file.write需要一个字符串，而不是序列。如果你想从一个序列中写入数据，你可以使用file.writelines. 例如f.writelines(self._headers)。但请注意，这不会在每一行附加一个换行符。你需要自己做。:)

Answer 2

假设您希望每行有 1 个标题，请尝试以下操作：

with open(outfile, 'w') as f:
    f.write('\n'.join(self._headers))  
    print done

Answer 3

要尽可能接近您的脚本：

>>> _headers = ('id',
...             'recipient_address_1',
...             'recipient_address_2',
...             'recipient_address_3',
...             'recipient_address_4',
...             'recipient_address_5',
...             'recipient_address_6',
...             'recipient_postcode',
...            )
>>> done = "Operation successfully completed"
>>> with open('outfile', 'w') as f:
...     for line in _headers:
...         f.write(line + "\n")
...     print done
Operation successfully completed